Bet Better Market Prices Dataset 2026: bookmaker prices, fair prices and bookmaker cut for 6,131 markets across 12 sports

6,131 betting markets across 12 sports (MLB, NCAAF, NFL, soccer, WNBA, AFL, NRL, tennis, NBA, UFC, cricket and NHL), for games played between 18 May 2025 and 18 September 2026. Each row is one market: the sport, game date, teams, market, selection and line, the bookmaker price, the probability implied by that price, the fair probability once the bookmaker cut is removed, the fair price, and the size of the cut. The file covers 134 market types. The bookmaker cut is measured directly for 3,796 rows and estimated for 2,335; the cut_source column says which. Use it to study how bookmakers price different markets, how large the cut is by sport and market type, and how to turn a quoted price into a fair probability. It is built for teaching and research. Documentation: https://betbetter.world/studies/teaching-dataset. Related open data: the game-level Bet Better Teaching Dataset 2026, the daily bookmaker margin index and the bookmaker margins study. Free to reuse with a credit to Bet Better (https://betbetter.world). For research and education, not betting advice.