Beat the models, one Sunday at a time.

Delta Sunday is a free NFL forecasting game. Every week you set how sure you are about each game with a slider. Right and confident earns up to 25 points; wrong and confident costs up to 75. You play against everyone else and against three forecasters: Elo, the ratings FiveThirtyEight made famous; the market, what the sportsbooks and prediction markets say; and the blend, our own, backtested on 24 seasons.

1. Sign in. Email and password, or a link we send you. Free.
2. Set a number for every game. The System will suggest one; adjust only where you know something the models don't.
3. Watch the board. Picks lock at kickoff, points land as games end, and the leaderboard shows whether you beat the market this week.