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  2. Betting on horse racing - Wikipedia

    en.wikipedia.org/wiki/Betting_on_horse_racing

    Betting on horse racing or horse betting[1] commonly occurs at many horse races. Modern horse betting started in Great Britain in the early 1600s during the reign of King James I. [2][3] Gamblers can stake money on the final placement of the horses taking part in a race. Gambling on horses is, however, prohibited at some racetracks.

  3. Sports betting - Wikipedia

    en.wikipedia.org/wiki/Sports_betting

    For example: If the bookmakers return percentage is 90%, 90% of the amount placed on the winning result will be given back to bettors and 10% goes to the bookmaker. Naturally the more money bet on a certain result, the smaller the odds on that outcome become. This is similar to parimutuel wagering in horse racing and dog racing. Half bets. A ...

  4. Billy Walters (gambler) - Wikipedia

    en.wikipedia.org/wiki/Billy_Walters_(gambler)

    Billy Walters (gambler) William T. Walters (born July 15, 1946) [1] is an American entrepreneur, philanthropist, New York Times best-selling author, [2] and one of the most successful American sports bettors of all time, having a winning streak which extended over 30 years. [3] Walters was convicted of insider trading and received a 5-year ...

  5. Odds - Wikipedia

    en.wikipedia.org/wiki/Odds

    Decimal odds are favoured by betting exchanges because they are the easiest to work with for trading, as they reflect the inverse of the probability of an outcome. [13] For example, a quoted odds of 5.00 equals to a probability of 1 / 5.00, that is 0.20 or 20%. Decimal odds are also known as European odds, digital odds or continental odds. [9]

  6. Betting strategy - Wikipedia

    en.wikipedia.org/wiki/Betting_strategy

    A betting strategy (also known as betting system) is a structured approach to gambling, in the attempt to produce a profit. To be successful, the system must change the house edge into a player advantage — which is impossible for pure games of probability with fixed odds, akin to a perpetual motion machine. [1]

  7. Starting price - Wikipedia

    en.wikipedia.org/wiki/Starting_price

    Starting price. In horse racing and greyhound racing, the starting price (SP) is the odds prevailing on a particular entry in the on-course fixed-odds betting market at the time a race begins. The method by which SPs are set for each runner varies in different countries but is generally by consensus of an appointed panel on the basis of their ...

  8. Meet 'Vegas Dave', one of the elite sports handicappers of ...

    www.aol.com/news/2016-01-21-meet-vegas-dave-one...

    Vegas Dave made history by placing a bet a little over $100,000 to 2.5 million. The highest paid future bet in sports betting history. ... Ronda Rousey at +1,100 odds. He placed a $20,000 bet and ...

  9. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    Fractional odds are written a − b (a/b or a to b), meaning a winning bettor will receive their money back plus a units for every b units they bet. Decimal odds are a single value, greater than 1, representing the amount to be paid out for each unit bet. For example, a bet of £40 at 6 − 4 (fractional odds) will pay out £40 + £60 = £100.