Fractional odds
Favoured by bookmakers in the United Kingdom and Ireland, and also common in horse racing, fractional odds quote the net total that will be paid out to the bettor, should he win, relative to his stake. Odds of 4/1 ("four-to-one" or less commonly "four-to-one against") would imply that the bettor stands to make a £400 profit on a £100 stake. If the odds are 1/4 (read "one-to-four", or "four-to-one on"), the bettor will make £25 on a £100 stake. Should he win, the bettor always receives his original stake back, so if the odds are 4/1 you would actually receive a total of £500 in return (£400 plus the original £100). Odds of 1/1 are known as evens or even money. This would result in the bettor making £100 profit, and receiving back £200 in total, should he win.
Not all fractional odds are traditionally read using the lowest common denominator. Perhaps most unusual is that odds of 10/3 are read as "one-hundred-to-thirty".
Fractional odds are also known as British odds, UK odds or in that country, traditional odds.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Arbitrage betting in practice
While often claimed to be "risk-free", this is only true if an arb is successfully completed; in reality, there are several threats to this:
Disappearance of arb: Arbs in online sports markets have a median lifetime of around 15 minutes [1], after which the difference in odds undepinning them vanishes through betting activity. Without rapid alerting and action, it is possible to fail to make all the "legs" of the arb before it vanishes, thus transforming it from a risk-free arb into a bet. High street bookmakers however, offer their odds days in advance and rarely change them once they've been set. These arbs can have a lifetime of several hours.
Making errors: In the excitement of the action and due to the high number of bets placed, it is not uncommon to make a mistake (like traders on financial markets). For example the appropriate stakes may be incorrectly calculated, or be placed on the wrong "legs" of the arb, locking in a loss, or there may be inadequate funds in one of the accounts to complete the arb. Those errors might temporarily have an important impact. In the long term, the benefit will depend on the odds. For example one could actually make more money by placing the "wrong" bet where the outcome happens to be beneficial, though not justified by the arbitrage calculation. However, this stroke of luck being repeated is unlikely, assuming the bookies have calculated the odds so they make a profit.
Bet cancellation: If a bettor places bets so as to make an arbitrage and one bookmaker cancels a bet, the bettor could find himself in a bad position because he is actually betting with all the risks implied. The bettor can repeat the bet that has been cancelled so as minimize the risk, but if he cannot get the same odds he had before he may be forced to take a loss. In some cases the situation arises when there are very high potential payouts by the bookie, perhaps due to an unintentional error made while quoting odds. Many jurisdictions allow bookmakers to cancel bets in the event of such a "palpable" ["obvious"] error in the quoted odds This is often loosely defined as an obvious mistake, but whether a "palp" in fact has been made is often the sole discretion of the bookmaker.
Other Problems: Bookmakers who suspect arbing can set very low maximum stake limits, making arbing insufficiently profitable. Capital diffusion is serious; many bookmakers make it very easy to deposit funds and difficult to withdraw them. Making a return involves many bets spread over typically many bookmakers so keeping track is a considerable challenge, and requires excellent record-keeping.
References
- ^ "How quickly is temporary market inefficiency removed?" Ben R. Marshall The Quarterly Review of Economics and Finance 49 (2009) 917–930
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Asian handicap
An Asian Handicap (named so simply because of its Eastern origins) is a gambling term used to describe spread betting in soccer that has gained popularity over the years. The handicaps typically range from one quarter goal to several goals and can be described in terms of half or even quarter goals.
Most importantly, Asian Handicap betting reduces the possible number of outcomes from three (in traditional 1X2 wagering) to two by eliminating the draw outcome. This simplification delivers two betting options that each have a near 50% chance of success.
Asian Handicaps are both good and bad for bookmakers. On one hand, they help bookmakers minimize risk by facilitating trading with parity or balancing the amount of wagering on each side of the match. This enables bookmakers to take larger positions on major matches. On the other hand, Asian Handicap markets are typically low margin offerings that do not contribute as significantly to the gross win as other, higher vigorish betting options like 1X2[1].
The term Asian Handicap was applied to this method of betting by a journalist, Joe Saumarez Smith, in November 1998. He was asked by an Indonesia bookmaker, Joe Phan, to provide a translation of the betting method that was termed 'hang cheng betting' by bookmakers in Asia.[2].
Description
Football (soccer) is one of the few sports in the world where a tie is a fairly common outcome. With traditional fixed odds, ties are treated as an additional outcome to the game. In other words, bettors lose when they place a wager on either team to win and the game ties. With Asian Handicaps, however, the chance for a tie is eliminated by use of a handicap that forces a winner. This creates a situation where each team has a 50-50 chance of winning; similar to the odds for a basketball or baseball game where a tie is impossible.
This system works in a straight-forward manner. The bookmakers's goal is to create a handicap or "line" that will make the chance of either team winning (considering the handicap) as close to 50% as possible. Since the odds are as close to 50% as possible, bookmakers offer payouts close to even money, or 1.90 to 2.00. Asian Handicaps start at a quarter goal and can go as high as 2.5 or 3 goals in matches with a huge disparity in ability. What makes Asian Handicaps most interesting is the use of quarter goals to get the "line" as close as possible. Taken in conjunction with the posted total for the game, the handicap essentially predicts the game's final score.
Quarter Goal or Two Way Handicaps
Subsequently, many matches are handicapped in ½ and ¼ intervals; both of which eliminate the possibility of a push since no one can score a half-goal. Quarter (¼) handicaps split the bet between the two next closest ¼ intervals. For instance, a $1000 bet with a handicap of 1 ¾ is the same as betting $500 at 1 ½ and $500 at 2. With ¼ handicap bets, you can win and tie (win ½ of wager) or lose and tie (lose ½ wager). The ¼-goal handicap may be expressed by some bookmakers as "0 and ½", or (especially for bookmakers whose systems are designed for sports like American football and basketball (where bets have a handicap that is designed to make the odds as close to even as possible)) as "pk (for "pick-em") and ½".
Match: Everton vs. Newcastle United
Handicap: 0 : +1.0, +1.5
Explained: This handicap states that half of your bet goes on Newcastle winning, or losing by less than 1 goal, and half on Newcastle winning, or losing by less than 1.5 goals.
If the final score is Everton 1-0 Newcastle, half your bet would be refunded due to draw (Everton 1 - +1 Newcastle, i.e: Newcastle lost by exactly one goal). The second half would win (Everton 1 - +1.5 Newcastle, i.e: Newcastle lost by less than 1.5 goals).
Whole Handicaps and Draws
In the event that a whole number is used for the handicap, the handicap adjusted final score could result in a draw. This situation is not a draw, but a push. With a push, all bettors have their original wagers returned as there is no winner.
Outcomes
| Handicap | Team Result | Bet Result | Handicap | Team Result | Bet Result |
| 0 | Win | Win | 0 | Win | Win |
| Draw | Stake Refund | Draw | Stake refund | ||
| Lose | Lose | Lose | Lose | ||
| -0.25 | Win | Win | +0.25 | Win | Win |
| Draw | Lose Half | Draw | Half Win | ||
| Lose | Lose | Lose | Lose | ||
| -0.50 | Win | Win | +0.50 | Win | Win |
| Draw | Lose | Draw | Win | ||
| Lose | Lose | Lose | Lose | ||
| -0.75 | Win by 1 | Half Win | +0.75 | Win | Win |
| Win by 2+ | Win | Draw | Win | ||
| Draw | Lose | Lose by 1 | Half Lose | ||
| Lose | Lose | Lose by 2+ | Lose | ||
| -1.00 | Win by 1 | Stake refund | +1.00 | Win | Win |
| Win by 2+ | Win | Draw | Win | ||
| Draw | Lose | Lose by 1 | Stake refund | ||
| Lose | Lose | Lose by 2+ | Lose | ||
| -1.25 | Win by 2+ | Win | +1.25 | Win | Win |
| Win by 1 | Half Lose | Draw | Win | ||
| Draw | Lose | Lose by 1 | Half Win | ||
| Lose | Lose | Lose by 2+ | Lose | ||
| -1.50 | Win by 2+ | Win | +1.50 | Win | Win |
| Win by 1 | Lose | Draw | Win | ||
| Draw | Lose | Lose by 1 | Win | ||
| Lose | Lose | Lose by 2+ | Lose | ||
| -1.75 | Win by 3+ | Win | +1.75 | Win | Win |
| Win by 2 | Half Win | Draw | Win | ||
| Win by 1 | Lose | Lose by 1 | Win | ||
| Draw | Lose | Lose by 2 | Half Lose | ||
| Lose | Lose | Lose by 3+ | Lose | ||
| -2.00 | Win by 3+ | Win | +2.00 | Win | Win |
| Win by 2 | Stake Refund | Draw | Win | ||
| Win by 1 | Lose | Lose by 1 | Win | ||
| Draw | Lose | Lose by 2 | Stake Refund | ||
| Lose | Lose | Lose by 3+ | Lose |
References
- ^ Charles, Gillespie (2007-12-04). "Asian Handicap Betting Basics". WSN.
- ^ George, Haggett (2002-05-14). "Origin of Asian Handicap". BetAsia.
Links
- Asian Handicap Betting Explained
- How to Bet Asian Handicap and Split Handicap
- Origins of Asian Handicap
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Betting exchange controversy
The fact gamblers can now lay outcomes on the exchanges has resulted in criticism from traditional bookmakers including the UK's "Big Three" - Gala Coral Group, Ladbrokes and William Hill. These firms argue that granting "anonymous" punters the ability to bet that an outcome will not happen is causing corruption in sports such as horse racing since it is much easier to ensure a horse will lose a race.
Exchanges counter that, while corruption is possible on any gambling platform, the bookies' arguments are motivated not by concern for the integrity of sport but by commercial interests. Exchanges also assert they are well aware of who their customers are and keep a complete record of all betting activity in case of enquiries. Furthermore, customers can monitor the odds on the exchanges' user-friendly platforms independently. Exchanges and the authorities can be immediately alerted should suspicious betting patterns become apparent. Some exchanges have signed agreements with governing bodies of sport including the Jockey Club, with whom they insist they will co-operate with fully if the latter suspects corruption to have taken place. Exchanges have co-operated with police investigations when asked to do so, sometimes leading to arrests.
Acest articol conţine materiale traduse şi adaptate din Wikipedia de Nicolae Sfetcu sub licenţă gratuită GNU.
Bonus sports arbitrage
Many bookmakers offer first time users a signup bonus in the range $10 - $200 for depositing an initial amount. They typically demand that this amount is wagered a number of times before the bonus can be withdrawn. Bonus sport arbitraging is a form of sports arbitraging where you hedge or back your bets as usual, but since you received the bonus, a small loss can be allowed on each wager (2-5 %), which comes off your profit. In this way the bookmakers wagering demand can be met and the initial deposit and sign up bonus can be withdrawn with little loss.
The advantage over usual betting arbitrage is that it is a lot easier to find bets with an acceptable loss, instead of an actual profit. Since most bookmakers offer these bonuses this can potentially be exploited to harvest the sign up bonuses.
Making money:
By signing up to various bookmakers, it's possible to turn these 'free' bets into cash fairly quickly, and either making a small arbitrage, or in the majority of cases, making a small loss on each bet, or trade. However, it is relatively time consuming to find close matched bets or arbs, which is where an arb / close matched bet service is useful.
Drawbacks:
As well as spending time physically matching odds from various bet sites to exchanges, the other draw back with bonus bagging / arb trading in this sense is that often the free bets are 'non-stake returned'. This effectively reduces the odds, in decimal format, by 1. Therefore, in order to reduce 'losses' on the free bet, it is necessary to place a bet with high odds, so that the percentage difference of the decrease in odds is minimised.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Internet gambling
With the arrival of the World Wide Web, many bookmakers have an online brand, although independently owned bookmakers often still maintain a "bricks and mortar" only operation and others operate a "skin" or "white label" operation which they purchase from one of the large firms as is the case with BetDirect and Betterbet . The main websites only accept bets from countries where internet gambling is not prohibited, and from people over 18 years old. Often these websites are linked to online casinos. Controversially, the explosion in Internet gambling is being linked to an increase in gambling addiction, according to the UK's help and advice organizations for addicts, GamCare and Gamblers Anonymous.
Increasingly, online bettors are turning to the use of betting exchanges such as Betfair and BETDAQ, which automatically match Back and Lay bets between different bettors, thus effectively cutting out the bookmaker's traditional profit margin also called an overround.
These online exchange markets operate a market index of prices near but usually not at 100% competitiveness as exchanges take commissions on winnings. True Wholesale odds are odds that operate at 100% of probabilistic outcomes.
Some bookmakers have even taken to using betting exchanges as a way of laying off unfavorable bets and thus reducing their overall exposure. This has led insecurity from the TAB in Australia, a government-run betting agency which attempted to deny Betfair an Australian license by running unfavorable ads in the media regarding the company. When Tasmania granted Betfair a license despite these efforts the Western Australian state legislature passed a law that specifically criminalised using betting exchanges from within the state, however that law was later ruled to be unconstitutional.
Betting exchanges are universally disliked by the traditional bookmaker. Not only are they generally able to offer punters better odds due to their much lower overheads, but also in giving opportunities for arbitrage: the practice of taking advantage of a price differential between two or more markets, although traditionally arbitrage has always been possible by backing all outcomes with bookmakers (dutching) as opposed to laying an outcome on an exchange. Exchanges do, however, allow bookmakers to see the state of the market and can set their odds accordingly.
Bets are also taken via phones, using SMS text messages, though poker and other sports are more suited to other mediums. As technology moves on, the gambling world ensures it is a major player in new technology operations.
Most televised sports in the United Kingdom and Europe are now sponsored wholly or partly by Internet and high street bookmakers, with sometimes several bookmakers and online casinos being displayed on players' shirts, advertising hoardings, stadium signs and competition event titles, although Werder Bremen are currently fighting the German courts for the freedom to continue featuring bookmaker Bwin on their shirts, as Germany and France take action against online gamers.
With the recent banning of tobacco sponsorship, and the significant commercial budgets available to the gaming industry, sponsorship by car manufacturers, alcoholic drinks, soft drinks and fast food marketers is being rapidly replaced by sponsorship by gaming companies in the Far East and Europe.
The United Kingdom Gambling Act 2005 introduces a new regulatory system for governing gambling in Great Britain. This system includes new provisions for regulating the advertising of gambling products. These provisions of the Act came into effect in September 2007. It is an offence to advertise in the UK, gambling which physically takes place in a non-European Economic Area (EEA), or in the case of gambling by remote means, gambling which is not regulated by the gambling laws of an EEA state.[1]
The situation is more confused in the United States, which has attempted to restrict operators of foreign gambling websites accessing their domestic market. This has resulted in a ruling against the US Government by the WTO.[2]
References
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Arbitrage using bookmakers
This type of arbitrage takes advantage of different odds offered by different bookmakers. Assume the following situation:
We consider an event with 2 possible outcomes (e.g. a tennis match - either Federer wins or Henman wins), the idea can be generalized to events with more outcomes, but we use this as an example.
The 2 bookmakers have different ideas of who has the best chances of winning. They offer the following Fixed-odds gambling on the outcomes of the event
| Bookmaker 1 | Bookmaker2 | |
| Outcome 1 | 1.25 | 1.43 |
| Outcome 2 | 3.9 | 2.85 |
For an individual bookmaker, the sum of the inverse of all outcomes of an event will always be greater than 1. 1.25 − 1 + 3.9 − 1 = 1.056 and 1.43 − 1 + 2.85 − 1 = 1.051
The fraction above 1, is the bookmakers return rate, the amount the bookmaker earns on offering bets at some event. Bookmaker 1 will in this example expect to earn 5.6% on bets on the tennis game. Usually these gaps will be in the order 8 - 12%.
The idea is to find odds at different bookmakers, where the sum of the inverse of all the outcomes are below 1. Meaning that the bookmakers disagree on the chances of the outcomes. This discrepancy can be used to obtain a profit.
For instance if one places a bet on outcome 1 at bookmaker 2 and outcome 2 at bookmaker 1:
1.43 − 1 + 3.9 − 1 = 0.956
Placing a bet of 100$ on outcome 1 with bookmaker 2 and a bet of $100 * 1.43 / 3.9 = 36.67 on outcome 2 at bookmaker 1 would ensure the bettor a profit.
In case outcome 1 comes out, one could collect r1 = $100 * 1.43 = $143 from bookmaker 2. In case outcome 2 comes out, one could collect r2 = $36.67 * 3.9 = $143 from bookmaker 1. One would have invested $136.67, but have collected $143, a profit of $6.33 (%4.6) no matter the outcome of the event.
So for 2 odds o1 and o2, where o1-1+ o2-1 < 1. If one wishes to place stake s1 at outcome 1, then one should place s2 = s1 * o1 / o2 at outcome 2, to even out the odds, and receive the same return no matter the outcome of the event.
Or in other words, if there are two outcomes, a 2/1 and a 3/1, by covering the 2/1 with $500 and the 3/1 with $333, one is guaranteed to win $1000 at a cost of $833, giving a 20% profit. More often profits exists around the 4% mark or less.
Reducing the risk of human error is vital being that the mathematical formula is sound and only external factors add "risk". Numerous online arbitrage calculator tools exist to help bettors get the math right. For example, the Arb Cruncher sports betting calculator handles calculations for both book arbitrage (back/back or lay/lay) and back/lay arbitrage opportunities on an intra-exchange or inter-exchange basis, and is free.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Legality of sports betting
In the USA, the Professional and Amateur Sports Protection Act of 1992 makes it illegal to operate a scheme except for in a few states. In many European nations bookmaking (the profession of accepting sports wagers) is regulated but not criminalized. The NCAA has threatened to ban all playoff games in Delaware if the state allows betting on college sports.[1] New Jersey, which is also interested, has been similarly threatened. [2] Proponents of legalized sports betting generally regard it as a hobby for sports fans that increases their interest in particular sporting events, thus benefiting the leagues, teams and players they bet on through higher attendances and television audiences. Opponents fear that, over and above the general ramifications of gambling, it threatens the integrity of amateur and professional sport, the history of which includes numerous attempts by sports gamblers to fix matches, although proponents counter that legitimate bookmakers will invariably fight corruption just as fiercely as governing bodies and law enforcement do. Most sports bettors are overall losers as the bookmakers odds are fairly efficient. However, there are professional sports bettors that make a good income betting sports, many of which utilize sports information services.
In areas where sports betting is illegal, bettors usually make their sports wagers with illicit bookmakers (known colloquially as "bookies") and on the Internet, where thousands of online bookmakers accept wagers on sporting events around the world.
Notes
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
United Kingdom gambling industry
Traditionally, bookmakers have been located at the racecourse, but improved TV coverage and modernisation of the law have allowed betting in shops and casinos in most countries. In the UK, on-track bookies still mark up the odds on boards beside the race course and use tic-tac or mobile telephones to communicate the odds between their staff and to other bookies, but, with the modernisation of United Kingdom Bookmaking laws, online and high street gambling are at an all-time high, with a so-called Super Casino having been planned for construction in Manchester prior to the government announcing that this plan had been scrapped on 26 February 2008.
In 1961, Harold Macmillan's Conservative Government legalised betting shops and tough measures were enacted to ensure that bookmakers remained honest. A large and respectable industry has grown since. At one time there were over 15,000 betting shops in the UK. Now, through consolidation, they have been reduced to about 8,500. Currently there are four major "high street" bookmakers in the United Kingdom: William Hill, Ladbrokes, Coral, and state-owned ToteSport, with Sky Bet, Bet24, Betfred, Victor Chandler, Stan James, Sportingbet, Mansion and Bet365, rapidly emerging, in terms of turnover and event sponsorship.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Arbitrage betting in theory
There is a number of potential arbitrage deals. Below is an explanation of some of them including formulas and risks associated with these arbitrage deals. The table below introduces a number of variables that will be used to formalise the arbitrage models.
| Variable | Explanation |
| s1 | Stake in outcome 1 |
| s2 | Stake in outcome 2 |
| o1 | Odds for outcome 1 |
| o2 | Odds for outcome 2 |
| r1 | Return if outcome 1 occurs |
| r2 | Return if outcome 2 occurs |
Arbitrage using bookmakers
This type of arbitrage takes advantage of different odds offered by different bookmakers. Assume the following situation:
We consider an event with 2 possible outcomes (e.g. a tennis match - either Federer wins or Henman wins), the idea can be generalized to events with more outcomes, but we use this as an example.
The 2 bookmakers have different ideas of who has the best chances of winning. They offer the following Fixed-odds gambling on the outcomes of the event
| Bookmaker 1 | Bookmaker2 | |
| Outcome 1 | 1.25 | 1.43 |
| Outcome 2 | 3.9 | 2.85 |
For an individual bookmaker, the sum of the inverse of all outcomes of an event will always be greater than 1. 1.25 − 1 + 3.9 − 1 = 1.056 and 1.43 − 1 + 2.85 − 1 = 1.051
The fraction above 1, is the bookmakers return rate, the amount the bookmaker earns on offering bets at some event. Bookmaker 1 will in this example expect to earn 5.6% on bets on the tennis game. Usually these gaps will be in the order 8 - 12%.
The idea is to find odds at different bookmakers, where the sum of the inverse of all the outcomes are below 1. Meaning that the bookmakers disagree on the chances of the outcomes. This discrepancy can be used to obtain a profit.
For instance if one places a bet on outcome 1 at bookmaker 2 and outcome 2 at bookmaker 1:
1.43 − 1 + 3.9 − 1 = 0.956
Placing a bet of 100$ on outcome 1 with bookmaker 2 and a bet of $100 * 1.43 / 3.9 = 36.67 on outcome 2 at bookmaker 1 would ensure the bettor a profit.
In case outcome 1 comes out, one could collect r1 = $100 * 1.43 = $143 from bookmaker 2. In case outcome 2 comes out, one could collect r2 = $36.67 * 3.9 = $143 from bookmaker 1. One would have invested $136.67, but have collected $143, a profit of $6.33 (%4.6) no matter the outcome of the event.
So for 2 odds o1 and o2, where 0-11 + 0-12 < 1. If one wishes to place stake s1 at outcome 1, then one should place s2 = s1 * o1 / o2 at outcome 2, to even out the odds, and receive the same return no matter the outcome of the event.
Or in other words, if there are two outcomes, a 2/1 and a 3/1, by covering the 2/1 with $500 and the 3/1 with $333, one is guaranteed to win $1000 at a cost of $833, giving a 20% profit. More often profits exists around the 4% mark or less.
Reducing the risk of human error is vital being that the mathematical formula is sound and only external factors add "risk". Numerous online arbitrage calculator tools exist to help bettors get the math right. For example, the Arb Cruncher sports betting calculator handles calculations for both book arbitrage (back/back or lay/lay) and back/lay arbitrage opportunities on an intra-exchange or inter-exchange basis, and is free.
Back-lay sports arbitrage
Betting exchanges have opened up a new range of arbitrage possibilities since on the exchanges it is possible to lay (i.e. to bet against) as well as to back an outcome. Arbitrage using only the back or lay side might occur on betting exchanges. It is in principle the same as the arbitrage using different bookmakers. Arbitrage using back and lay side is possible if a lay bet on one exchange provides shorter odds than a back bet on another exchange or bookmaker. However, the commission charged by the bookmakers and exchanges must be included into calculations.
Back-lay sports arbitrage is often called scalping or trading. Scalping is not actually arbitrage, but short term trading. In the context of sports arbitrage betting a scalping trader or scalper looks to make lots of small profits, which in time can add up. In theory a trader could turn a small investment into large profits by re-investing his earlier profits into future bets so as to generate exponential growth. Scalping relies on liquidity in the markets and that the odds fill flucuate around a mean point. A key advantage to scalping on one exchange is that most exchanges charge commission only on the net winnings in a particular event, thus ensuring that even the smallest favourable difference in the odds will guarantee some profit.
Bonus sports arbitrage
Many bookmakers offer first time users a signup bonus in the range $10 - $200 for depositing an initial amount. They typically demand that this amount is wagered a number of times before the bonus can be withdrawn. Bonus sport arbitraging is a form of sports arbitraging where you hedge or back your bets as usual, but since you received the bonus, a small loss can be allowed on each wager (2-5 %), which comes off your profit. In this way the bookmakers wagering demand can be met and the initial deposit and sign up bonus can be withdrawn with little loss.
The advantage over usual betting arbitrage is that it is a lot easier to find bets with an acceptable loss, instead of an actual profit. Since most bookmakers offer these bonuses this can potentially be exploited to harvest the sign up bonuses.
Making money
By signing up to various bookmakers, it's possible to turn these 'free' bets into cash fairly quickly, and either making a small arbitrage, or in the majority of cases, making a small loss on each bet, or trade. However, it is relatively time consuming to find close matched bets or arbs, which is where an arb / close matched bet service is useful.
Drawbacks
As well as spending time physically matching odds from various bet sites to exchanges, the other draw back with bonus bagging / arb trading in this sense is that often the free bets are 'non-stake returned'. This effectively reduces the odds, in decimal format, by 1. Therefore, in order to reduce 'losses' on the free bet, it is necessary to place a bet with high odds, so that the percentage difference of the decrease in odds is minimalised.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Bookmaking
The general role of the bookmaker is to act as a market maker for sports wagers, most of which have a binary outcome: a team either wins or loses. The bookmaker accepts both wagers, and maintains a spread (the vigorish) which will ensure a profit regardless of the outcome of the wager. The Federal Wire Act of 1961 was an attempt by the US government to prevent illegal bookmaking[1]. However, this Act does not apply to other types of online gambling.[2] The Supreme Court has not ruled on the meaning of the Federal Wire Act as it pertains to Online gambling.
Notes
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Legality of the bookmakers
Bookmaking may be legal or illegal, and may be regulated; in the United Kingdom it was at times both regulated and illegal, in that licences were required but no debts arising from gambling could be enforced through the courts. Now, since the inception of the National Lottery, not only is it completely legal in the UK, it is a small contributor to the British economy, with a recent explosion of interest with regard to the international gaming sector industry. However, gambling debts still remain unenforceable under English law.
Bookmaking is generally illegal in the United States, with Nevada being a notable exception.
In some countries, such as Singapore, Sweden, Canada and Hong Kong, the only legal bookmaker is state-owned and operated. In Canada, this is part of the lottery program and is known as Sport Select.
In the United Kingdom, trusted legal bookmakers are members of IBAS, which is an industry standard organization which resolves to settle
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Exchanges and traditional bookmakers compared
Most exchanges make their money by charging a commission which is calculated as a percentage of net winnings for each customer on each event, or market. Gamblers whose betting activities have traditionally been restricted by bookmakers (normally for winning too much money) have found these sites a boon since they are now able to place bets of a size unrestricted by the exchange - the only restriction is that one or more opposing customers need to be willing to match their bets. Moreover, the odds available on a betting exchange are usually better than those offered by bookmakers, in spite of the commission charged, because the middle man is eliminated.
In spite of these advantages, exchanges currently have some limitations. Because exchanges seek to concentrate their liquidity in as few markets (i.e. propositions) as possible they are not currently suited to unrestricted multiple parlay betting. Betfair does offer accumulators but these are limited in number and type: Users cannot determine the outcomes contained in accumulators themselves. Some exchanges also offer multiples but the exchanges act in the same manner as traditional bookmakers in doing so (i.e. they themselves and not a customer act as the layer of such bets) Exchanges also tend to restrict the odds that can be offered to between 1.01 (100 to 1 on i.e. 1 to 100) and 1000 (999 to 1).
A further advantage that traditional bookmakers retain over exchanges is that bookies are better willing and able to allow customers to bet on credit. There are two obvious reasons for this:
- Exchanges operatee on much tighter margins, which lessens their ability to absorb bad debts.
- Allowing customers to bet on credit would likely compromise customer confidence in the financial integrity of an exchange, especially when one considers the effects of the ongoing credit crisis and the close association between betting exchanges and Internet betting in general.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Operational procedures of the bookmakers
By adjusting the odds in his favor or by having a point spread, the bookmaker will aim to guarantee a profit by achieving a 'balanced book', either by getting an equal number of bets for each outcome, or (when he is offering odds) by getting the amounts wagered on each outcome to reflect the odds. When a large bet comes in, a bookmaker can also try to lay off the risk by buying bets from other bookmakers. The bookmaker does not generally attempt to make money from the bets themselves, but rather profiting from the event regardless of the outcome. Their working methods are similar to that of an actuary, who does a similar balancing of financial outcomes of events for the assurance and insurance industries.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.
Bookmakers
Bookmakers on a greyhound race course, Reading, UK
A bookmaker, or bookie, is an organization or a person that takes bets on sporting and other events at agreed upon odds.
Range of events
Most bookmakers in the United States bet merely on college and professional sports, though in the United Kingdom and Ireland they offer a wider range of bets, including each-way betting on golf, football and tennis, and especially horse racing and greyhound racing. They also specialize in novelty events such as betting that there will be a white Christmas, the outcome of political elections and reality television contests.
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Betting strategy
A betting strategy or betting system is a structured approach to gambling intended to counter the inherent bias held by the house in casino and card games and by bookmakers in horseracing and sports betting. A successful strategy should increase the odds of winning in order to produce long term profits from a pursuit which under normal circumstances will only ever result in a long term loss.
All betting systems are predicated on statistical analysis, seeking to exploit the rare circumstances when the odds are in the favour of the player. Though the basis of all risk is fundamentally the same, betting systems vary in relation to the rules and circumstances of each particular game. The most established betting systems include:
- Card games - Card counting
- Roulette - Martingale
- Horse racing - Hedging, Arbitrage
- Sports - Handicapping[citation needed]
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