The bookie is a fixture of the gambling industry, and their odds-keeping is not just an arbitrary number. So how do they calculate those odds? Matthew Trenhaile, a former odds compiler for IG Index, divulges the details to Daily25.com.
The process of compiling odds
Initially, odds compilers were divided on Betfair’s potential and how to use it to compile prices. Matthew began his career at the height of Betfair’s success when its overwhelming liquidity made it impossible to ignore them. Over the course of six years, they used the Betfair API to scrape data and compile prices for the horse racing markets.
Formulating sports statistical models
The origins of statistical odds compiling can be traced back to the humble act of counting how often one type of occurrence followed another. To create a statistical model, you need to understand the punters and how they react to the odds but worry less about the game’s actual outcome. Then the moment came when in-run betting was introduced, which played a significant role in the evolution of odds compilation through mathematical modeling. Manually quoting prices for multiple events across various markets had become impossible for a human being to achieve.
Modeling sports using the Poisson Distribution
Mathematical models exist for the vast majority of sports, and these models may be improved upon as new information or data becomes available. Poisson distribution is useful to model football. It allows factoring in the passage of time easily while refining the process to achieve the most accurate odds or price possible. By assessing the caliber of shots and the influence of individual players, the compilers for football betting have become sophisticated in that they can generate advanced player-specific models that factor in several variables.
Bookmaker’s perspective on in-house odds compiler has changed
To bookmakers, the odds are about as significant as the cost of a beer, not a hotel room. Since guests do not decide which hotel they will stay at based on the price of beer, bookmakers do not focus on developing and improving odds. What they sell is adrenaline rush or fun for customers, not a battle of wits between gamblers and bookies. Bookies still expect to earn money no matter how good or bad their odds are. Though this is not what Matthew likes, he thinks this model will never die out.
Odds compiler in the future
In the future, Matthew is sure that the role of Bookies will change gradually. They will outsource the process of compiling odds. Odds providers will mainly focus on the ratio of winning before the match and while it is running. More standardization in pricing is on the way. Liquidity in the market increases the likelihood of prices staying within the same range. In his opinion, the future of betting lies in the pari-mutuel method of wagering with a very slim margin
