Celtics at Pistons tips Tue, Oct 20 3:00 PM ET — 30 days, 3 hours.

Score, clock and period are read off the live scoreboard and are seconds old. Win probability is this product's calibrated model, re-read after every play from the score, the clock and who has the ball. Heat is our ordering of where to look, not a statistic: how in doubt a game is, how late it is, how hard it just swung, and whether it is about to tip. A game whose plays have not been read yet is ranked from its scoreboard alone and says so. The swing is the largest move in our model's probability over a game's last twelve plays.