WhenWin scans sports prediction markets on Polymarket and Kalshi every 2 hours. We flag contracts where the market price is mispriced by 8+ points relative to the statistical probability.
Sports markets are uniquely calibratable. Game outcomes, player props, and season milestones have large historical datasets and strong base rates. WhenWin cross-references market prices against injury reports, team stats, and historical calibration data to find edges the market hasn't priced in yet.
NFL game outcomes and player props. NBA season milestones and game spreads. MLB win totals. Soccer tournament and match markets. Any sports event trading on Polymarket or Kalshi.
Every pick is tracked publicly. See the full history on the performance page.