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.
Set how sure you are for every game. Right at 100% earns 25 points, wrong at 100% costs 75, 50% scores nothing. Picks lock at kickoff. Elo is the model you're trying to beat. The spread, sportsbooks, Kalshi and Polymarket are shown for reference, and they compete on the leaderboard too. Our lock and bold call of the week are on the Predictions page. Sign in to play.