sports betting backtest leakage

Sports Betting Backtests Can Look Accurate for the Wrong Reason: The Hidden Danger of Future Data

A sports betting model can appear accurate in historical testing while using information that was not available when its predictions were supposedly made. This problem, called data leakage, can make ordinary models look unusually powerful and turn realistic betting costs into misleading profitability estimates. The central question is simple: Could the analyst actually have known […]

Prediction Markets Are Putting $29.5 Billion in U.S. NFL Betting Under Pressure

The 2026 NFL season is producing a striking split in the U.S. betting market. Traditional regulated sportsbooks are still handling billions of dollars in wagers, but the growth that once defined the legal sports-betting expansion has slowed just as prediction markets have begun attracting enormous trading volumes. For bettors comparing traditional sportsbook options, the BetAnySports […]