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I think I've corrected the issues below. I've changed the example and changed the math. I hope the idea makes sence now?
I've added another section describing a related system, sports bonus arbitraging as well, but I have some issues with it I need help with:
1) It's probably the same thing mentioned in matched betting which I saw later. So should the articles be merged, reference to each other or should what I've added be moved over there and meregd?
2) I've tried to add a link to a site describing sport bonus arbitraging, but its been removed a couple of times because it was suspected to be spamming. So I'd like your opinion on if the link is relevant or not?
Starkodder 23:36, 27 September 2006 (UTC)
There's something wrong with the formulae.
shouldn't return be:
r1 = s1o1 - (s1 + s2);
r2 = s2o2 - (s1 + s2);
For some reason User 2005 keeps removing the link to Sports Arbitrage Guide from the external links section and calling it spam, while leaving sports-arbitrage.info there. This makes no sense whatsoever and I would like an explanation from him, and any input from other users.
There is nothing spam-like about Sports Arbitrage Guide (SAG), neither in its display, its advertising, nor in its information. It is a truly unique source of high quality information on sports arbitrage betting, and often recognised as the most reliable source of information on sports arbitrage trading. I think it deserves a mention in the main article personally, but I will leave that up to someone else to do should they think it appropriate.
Sports Arbitrage Guide has an introductions section which thoroughly goes through all of the basics of Sports arbitrage betting. It explains what sports arbitrage is [1], it provides thorough examples of it [2], explains the calculations simply [3] and provides more complex examples of calculation [4] and even goes into details about the risks of sports arbitrage betting [5]. It then also has a FAQ, which provides answers to a lot of the questions most people think to themselves while reading through the sort of information found in this article here, and in the text on SAG [6].
All of that information is provided without pushing any sales on the visitors, without obscene flashing lights, and all as easily readable as possible. The information is unique, useful, and practical.
As well as that, SAG provides practical information for people investigating Arbitrage. It provides information on Bookmakers, E-wallets and alert services. It has the *only* comprehensive listing of all of the alert services online [7], and it presents them all in an unbiased, non-sales-laden way. The information is once again unique, useful, practical, and above all else it is appreciated by a great number of people. No one who visits SAG and uses it thinks that SAG is a spam website, yet people who are interested in learning about Sports Arbitrage Betting all think that SAG is the best website they have found.
Last but not least, SAG provides the *only* Sports Arbitrage Betting dedicated news blog [8] with a history of providing useful, and insightful news pertaining to the sports arbitrage industry.
Can someone please explain to me how having a link to the most relevant website online with regards to Sports Arbitrage Betting is out of place in the "External Links" section of the wikipedia entry on 'Sports Arbitrage Betting'? And if you can do that, then please follow up with an explanation for how sports-arbitrage.info is still appropriate. Aegist 10:22, 4 October 2007 (UTC)
And I don't get it why Oddsfinder.com got removed as a link. I use that resource everyday for sports arbitrage. It is a good example of arbitrage betting and it is also free. —Preceding unsigned comment added by Pm1337 ( talk • contribs) 07:16, 2 August 2010 (UTC)
There is something wrong with the table. I fixed it once but it was changed back in a few days... —Preceding unsigned comment added by 72.166.78.66 ( talk) 23:01, 10 September 2007 (UTC)
As they stand, the figures here don't seem to make any sense to me. Surely the math looks like this, right?
outlay: $130 ( $100 stake to b1, $30 to b2 )
outcome 1: b1 pays $130, b2 pays $0 ( break even )
outcome 2: b1 pays $0, b2 pays $90 ( $40 _loss_ )
Has someone been dicking with the numbers?
- 219.165.164.126 06:06, 18 April 2006 (UTC)
The calculations for the decimal odds are not correct for outcome 1/bookmaker 2 143/100 comes out to 2.43 decimal odds. Outcome 2/Bookmaker 1 should be 4.9, and outcome 2/bookmaker 2 should be 3.85. The content of the article is wonderful, but the math has some minor issues. Afbarnes ( talk) 01:08, 24 January 2018 (UTC)
I think there are several errors with the explanation
Firstly the point of the Sports Arbitrage is to find games where the Bookies odds for all the outcomes add up to less than 1 (a certainty). This discrepency is where the money is made. If the sum of all the outcomes i.e. win, lose, or draw is less than one then that must mean that there is a probability for another type of outcome - the arbitrage. Of course this probability has no physical meaning it is the result of incorrect odds being applied to the game.
If in the example given
Bookmaker1 | Bookmaker2 | |
---|---|---|
Outcome1 | 1.3 | 1.5 |
Outcome2 | 4.3 | 3 |
The probabilities for a Bookmaker B of Outcome O are given by
For (Bookmaker 1, Outcome 1) and (Bookmaker 2, Outcome 2) which is the example given in the text
So there is no arbitrage for the example given!
There is however an arbitrage for (Bookmaker 1, Outcome2) and (Bookmaker 2, Outcome 1)
For the punter there are 2 possible outcomes and each outcome gives a return R for a stake S. We want to know what stakes are required to generate the same return on each outcome - a no loss situation!
multiply out and simplifying we get
For a Stake = £100, put £74.14 on Outcome 1 with Bookmaker 2 and put £25.86 on Outcome 2 with Bookmaker 1.
If Outcome 1 occurs:
Return = (1.5 - 1)*74.14 - 25.86
= £11.20
If Outcome 2 occurs: Return = (4.3 - 1)*25.86 - 74.14
= £11.20
Did anyone like my Arbitrage Calculator that has been linked from here for about 6 months. It was recently deleted, and I'm not sure why. Maybe because it has ads on the site?
Anyway, if you want to check it out, it is at www.scalpulator.com.
It's just a question, but having read this topic it seems to take a negative stance towards Arbitrage Betting. I have used sports arbitrages for over a year and succesfully found enough sports arbitrages to make a decent continued profit.
One the risk front, I know that odds can change but you learn to work around this by lining up your bets all at once. With regards to Bookmakers not paying, I've never had this problem but I'd like to hear from anyone who has as this is serious.
The other point is how much money needed to make a decent return. This comes down to two points, firstly the return of each arbitrage. I usually play arbs that yeild 4% or more. I find at least one daily. I also use a stake of £2000. I don't play over the weekend unless a really good arb comes up. Over the course of one month I double my stake, which I think it pretty healthy and gives a solid annual income.
I do accept that there is risk, mostly from human error, but by the same tolken I think there is merit in arbitrage betting and this should be expressed in the editorial tone.
While I don't exactly want to encourage people to try arbitrage betting I also don't think that putting people off is a good thind either. Wiki should be a little more balanced.
Its just my opinion but what does everyone think?
SlipperyJim ( talk) 10:02, 21 September 2012 (UTC)
Update: Jan 2nd, 10:31 GMT: I did make an update with two external links containing free Sports Arbitrage calculator which after edit seemed inappropriate for the article page. They are BetRiskFree and Sports-Arbitrage-Calculator I use both often due to the fact that it is good practise to check all odds even if you use an email alert service too.
Alexone234 11:36, 31 December 2006 (UTC)
Fair enough. I just though they were pertinent. As I explained, I find the editorial tone of this topic negative when it need not be. It should be precautionary but not negative. Alexone234 17:36, 2 January 2007 (UTC)
Can bookmakers really do that?? Cancelling your bets just like that? Isn't there some regulations around it? — Preceding
unsigned comment added by
60.241.241.224 (
talk)
06:25, 7 September 2014 (UTC)
It looks like these two articles are discussing the same concept, and neither is very long, so I think they should be merged. Thoughts? (For now, I've linked the articles to each other via "see also".) MrVoluntarist 13:42, 4 April 2007 (UTC)
Don't merge Dutch book, since it is a statistics and economics term. -- SE16 17:02, 4 May 2007 (UTC)
I think they should remain separate. 60.242.81.14 09:40, 4 October 2007 (UTC)
I tagged this article for citations. Right now there are a couple of external links, but the article really needs to include multiple citations from reliable sources. Rray ( talk) 23:12, 17 December 2007 (UTC)
What's that about? This isn't a place to get tips. -- 78.143.224.116 ( talk) 22:55, 16 March 2009 (UTC)
This whole article is full of statements which really, really need backing up. I'm a sports arber myself, and some of the content seems to reflect personal experience/opinion rather than verifiable fact. At the very least it needs citations to support many of its claims. — Preceding unsigned comment added by 81.108.180.242 ( talk) 18:02, 3 July 2012 (UTC)
You are right. Even 11 years later there aren't many citations to be seen here. I think the concept should have multiple sources of citations by now, I'll try to do some research here on out. Uddhav9 ( talk) 07:49, 4 March 2023 (UTC)
I have removed the following text from the article because it is utter codswallop, obviously the opinion of a half-wit who has no clue. ==>
A typical arbitrage profit is around 2 percent, often less; however 4-5 percent profit is occasionally obtained, and sometimes even 20 percent. citation needed Arbitrage betting involves relatively large sums of money (stakes are bigger than in normal betting), due to large sums of money being required to generate a decent profit. It is usually detected quickly by bookmakers. Arbitrage betting is almost always insufficiently profitable due to detection, hackers, unreliable betting websites, limiting of stakes, and the use of high percentage arbitrages to trick bettors into giving security details.
Bookmakers generally disapprove of betting arbitrage, and restrict or close the accounts of those who they suspect of engaging in arbitrage betting. Although arbitrage betting has existed since the beginnings of bookmaking, the rise of the Internet, odds-comparison websites and betting exchanges have made the practice easier to perform. On the other hand, these changes also made it easier for bookmakers to keep their odds in line with the market, because arbitrage bettors are basically acting as market makers.
The best way of generating profit via sports arbitrage, which has been established in Britain, consists of highly experienced "key men" employing others to place bets on their behalf, so as to avoid detection and increase accessibility to retail bookmakers. This allows the financiers or key arbitragers to stay at a computer to keep track of market movement.
Arbitrage is an extremely fast-paced process and its successful performance requires lots of time, experience, dedication and discipline, and especially liquidity.
<==
To consider why it's stoo-pid, just look at the last paragraph. It would obviously be equally, or in my opinion more, plausible to say "Successful arbitrage is generally done by specialists in other fields who have long considered a situation and see an unusual opportunity. Unlike specialists who work frantically by the day for peanuts, they are often able to make profits of thousands of percent of their investment by taking advantage of detailed study and relaxed reflection."
David Lloyd-Jones (
talk)
09:39, 25 January 2014 (UTC)
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||
|
I think I've corrected the issues below. I've changed the example and changed the math. I hope the idea makes sence now?
I've added another section describing a related system, sports bonus arbitraging as well, but I have some issues with it I need help with:
1) It's probably the same thing mentioned in matched betting which I saw later. So should the articles be merged, reference to each other or should what I've added be moved over there and meregd?
2) I've tried to add a link to a site describing sport bonus arbitraging, but its been removed a couple of times because it was suspected to be spamming. So I'd like your opinion on if the link is relevant or not?
Starkodder 23:36, 27 September 2006 (UTC)
There's something wrong with the formulae.
shouldn't return be:
r1 = s1o1 - (s1 + s2);
r2 = s2o2 - (s1 + s2);
For some reason User 2005 keeps removing the link to Sports Arbitrage Guide from the external links section and calling it spam, while leaving sports-arbitrage.info there. This makes no sense whatsoever and I would like an explanation from him, and any input from other users.
There is nothing spam-like about Sports Arbitrage Guide (SAG), neither in its display, its advertising, nor in its information. It is a truly unique source of high quality information on sports arbitrage betting, and often recognised as the most reliable source of information on sports arbitrage trading. I think it deserves a mention in the main article personally, but I will leave that up to someone else to do should they think it appropriate.
Sports Arbitrage Guide has an introductions section which thoroughly goes through all of the basics of Sports arbitrage betting. It explains what sports arbitrage is [1], it provides thorough examples of it [2], explains the calculations simply [3] and provides more complex examples of calculation [4] and even goes into details about the risks of sports arbitrage betting [5]. It then also has a FAQ, which provides answers to a lot of the questions most people think to themselves while reading through the sort of information found in this article here, and in the text on SAG [6].
All of that information is provided without pushing any sales on the visitors, without obscene flashing lights, and all as easily readable as possible. The information is unique, useful, and practical.
As well as that, SAG provides practical information for people investigating Arbitrage. It provides information on Bookmakers, E-wallets and alert services. It has the *only* comprehensive listing of all of the alert services online [7], and it presents them all in an unbiased, non-sales-laden way. The information is once again unique, useful, practical, and above all else it is appreciated by a great number of people. No one who visits SAG and uses it thinks that SAG is a spam website, yet people who are interested in learning about Sports Arbitrage Betting all think that SAG is the best website they have found.
Last but not least, SAG provides the *only* Sports Arbitrage Betting dedicated news blog [8] with a history of providing useful, and insightful news pertaining to the sports arbitrage industry.
Can someone please explain to me how having a link to the most relevant website online with regards to Sports Arbitrage Betting is out of place in the "External Links" section of the wikipedia entry on 'Sports Arbitrage Betting'? And if you can do that, then please follow up with an explanation for how sports-arbitrage.info is still appropriate. Aegist 10:22, 4 October 2007 (UTC)
And I don't get it why Oddsfinder.com got removed as a link. I use that resource everyday for sports arbitrage. It is a good example of arbitrage betting and it is also free. —Preceding unsigned comment added by Pm1337 ( talk • contribs) 07:16, 2 August 2010 (UTC)
There is something wrong with the table. I fixed it once but it was changed back in a few days... —Preceding unsigned comment added by 72.166.78.66 ( talk) 23:01, 10 September 2007 (UTC)
As they stand, the figures here don't seem to make any sense to me. Surely the math looks like this, right?
outlay: $130 ( $100 stake to b1, $30 to b2 )
outcome 1: b1 pays $130, b2 pays $0 ( break even )
outcome 2: b1 pays $0, b2 pays $90 ( $40 _loss_ )
Has someone been dicking with the numbers?
- 219.165.164.126 06:06, 18 April 2006 (UTC)
The calculations for the decimal odds are not correct for outcome 1/bookmaker 2 143/100 comes out to 2.43 decimal odds. Outcome 2/Bookmaker 1 should be 4.9, and outcome 2/bookmaker 2 should be 3.85. The content of the article is wonderful, but the math has some minor issues. Afbarnes ( talk) 01:08, 24 January 2018 (UTC)
I think there are several errors with the explanation
Firstly the point of the Sports Arbitrage is to find games where the Bookies odds for all the outcomes add up to less than 1 (a certainty). This discrepency is where the money is made. If the sum of all the outcomes i.e. win, lose, or draw is less than one then that must mean that there is a probability for another type of outcome - the arbitrage. Of course this probability has no physical meaning it is the result of incorrect odds being applied to the game.
If in the example given
Bookmaker1 | Bookmaker2 | |
---|---|---|
Outcome1 | 1.3 | 1.5 |
Outcome2 | 4.3 | 3 |
The probabilities for a Bookmaker B of Outcome O are given by
For (Bookmaker 1, Outcome 1) and (Bookmaker 2, Outcome 2) which is the example given in the text
So there is no arbitrage for the example given!
There is however an arbitrage for (Bookmaker 1, Outcome2) and (Bookmaker 2, Outcome 1)
For the punter there are 2 possible outcomes and each outcome gives a return R for a stake S. We want to know what stakes are required to generate the same return on each outcome - a no loss situation!
multiply out and simplifying we get
For a Stake = £100, put £74.14 on Outcome 1 with Bookmaker 2 and put £25.86 on Outcome 2 with Bookmaker 1.
If Outcome 1 occurs:
Return = (1.5 - 1)*74.14 - 25.86
= £11.20
If Outcome 2 occurs: Return = (4.3 - 1)*25.86 - 74.14
= £11.20
Did anyone like my Arbitrage Calculator that has been linked from here for about 6 months. It was recently deleted, and I'm not sure why. Maybe because it has ads on the site?
Anyway, if you want to check it out, it is at www.scalpulator.com.
It's just a question, but having read this topic it seems to take a negative stance towards Arbitrage Betting. I have used sports arbitrages for over a year and succesfully found enough sports arbitrages to make a decent continued profit.
One the risk front, I know that odds can change but you learn to work around this by lining up your bets all at once. With regards to Bookmakers not paying, I've never had this problem but I'd like to hear from anyone who has as this is serious.
The other point is how much money needed to make a decent return. This comes down to two points, firstly the return of each arbitrage. I usually play arbs that yeild 4% or more. I find at least one daily. I also use a stake of £2000. I don't play over the weekend unless a really good arb comes up. Over the course of one month I double my stake, which I think it pretty healthy and gives a solid annual income.
I do accept that there is risk, mostly from human error, but by the same tolken I think there is merit in arbitrage betting and this should be expressed in the editorial tone.
While I don't exactly want to encourage people to try arbitrage betting I also don't think that putting people off is a good thind either. Wiki should be a little more balanced.
Its just my opinion but what does everyone think?
SlipperyJim ( talk) 10:02, 21 September 2012 (UTC)
Update: Jan 2nd, 10:31 GMT: I did make an update with two external links containing free Sports Arbitrage calculator which after edit seemed inappropriate for the article page. They are BetRiskFree and Sports-Arbitrage-Calculator I use both often due to the fact that it is good practise to check all odds even if you use an email alert service too.
Alexone234 11:36, 31 December 2006 (UTC)
Fair enough. I just though they were pertinent. As I explained, I find the editorial tone of this topic negative when it need not be. It should be precautionary but not negative. Alexone234 17:36, 2 January 2007 (UTC)
Can bookmakers really do that?? Cancelling your bets just like that? Isn't there some regulations around it? — Preceding
unsigned comment added by
60.241.241.224 (
talk)
06:25, 7 September 2014 (UTC)
It looks like these two articles are discussing the same concept, and neither is very long, so I think they should be merged. Thoughts? (For now, I've linked the articles to each other via "see also".) MrVoluntarist 13:42, 4 April 2007 (UTC)
Don't merge Dutch book, since it is a statistics and economics term. -- SE16 17:02, 4 May 2007 (UTC)
I think they should remain separate. 60.242.81.14 09:40, 4 October 2007 (UTC)
I tagged this article for citations. Right now there are a couple of external links, but the article really needs to include multiple citations from reliable sources. Rray ( talk) 23:12, 17 December 2007 (UTC)
What's that about? This isn't a place to get tips. -- 78.143.224.116 ( talk) 22:55, 16 March 2009 (UTC)
This whole article is full of statements which really, really need backing up. I'm a sports arber myself, and some of the content seems to reflect personal experience/opinion rather than verifiable fact. At the very least it needs citations to support many of its claims. — Preceding unsigned comment added by 81.108.180.242 ( talk) 18:02, 3 July 2012 (UTC)
You are right. Even 11 years later there aren't many citations to be seen here. I think the concept should have multiple sources of citations by now, I'll try to do some research here on out. Uddhav9 ( talk) 07:49, 4 March 2023 (UTC)
I have removed the following text from the article because it is utter codswallop, obviously the opinion of a half-wit who has no clue. ==>
A typical arbitrage profit is around 2 percent, often less; however 4-5 percent profit is occasionally obtained, and sometimes even 20 percent. citation needed Arbitrage betting involves relatively large sums of money (stakes are bigger than in normal betting), due to large sums of money being required to generate a decent profit. It is usually detected quickly by bookmakers. Arbitrage betting is almost always insufficiently profitable due to detection, hackers, unreliable betting websites, limiting of stakes, and the use of high percentage arbitrages to trick bettors into giving security details.
Bookmakers generally disapprove of betting arbitrage, and restrict or close the accounts of those who they suspect of engaging in arbitrage betting. Although arbitrage betting has existed since the beginnings of bookmaking, the rise of the Internet, odds-comparison websites and betting exchanges have made the practice easier to perform. On the other hand, these changes also made it easier for bookmakers to keep their odds in line with the market, because arbitrage bettors are basically acting as market makers.
The best way of generating profit via sports arbitrage, which has been established in Britain, consists of highly experienced "key men" employing others to place bets on their behalf, so as to avoid detection and increase accessibility to retail bookmakers. This allows the financiers or key arbitragers to stay at a computer to keep track of market movement.
Arbitrage is an extremely fast-paced process and its successful performance requires lots of time, experience, dedication and discipline, and especially liquidity.
<==
To consider why it's stoo-pid, just look at the last paragraph. It would obviously be equally, or in my opinion more, plausible to say "Successful arbitrage is generally done by specialists in other fields who have long considered a situation and see an unusual opportunity. Unlike specialists who work frantically by the day for peanuts, they are often able to make profits of thousands of percent of their investment by taking advantage of detailed study and relaxed reflection."
David Lloyd-Jones (
talk)
09:39, 25 January 2014 (UTC)