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Sports Betting Arbitrage Detector

PythonOdds API
MAR 2025

#Arbitrage

Arbitrage is the simultaneous buying and selling of securities, currency, or commodities in different markets or in derivative forms in order to take advantage of differing prices for the same asset.

This strategy can also be adopted and applied in sports betting. In sports betting, a bettor can place one bet on each outcome on different betting companies. When conditions allow and the math is correct, the bettor makes a profit regardless of the outcome. Effectively arbitrage betting is a sure profit bet.

The goal is to find mismatches in different sportsbooks on certain sports events and then exploiting them with a large sum of money.

Arbitrage definition diagram
Visual explanation of sports betting arbitrage

#Arb Bot

Most arbitrage bots work on the same workflow. First, collect odds data for various sports events and on different sportsbooks. I used the Odds API to retrieve data every minute to capture data at a relatively fast (and rule-following) manner.

The next step is to find arbitrage opportunities. This is done by comparing the odds of the same event on different sportsbooks. A very simple mathematical formula is followed — if the sum of the reciprocals of the best odds across all outcomes is less than 1, an arbitrage opportunity exists.

#Screenshots

Arbitrage Bot output
Bot output showing detected arbitrage opportunities