What happened: Mookie Betts is slashing .373/.468/.746 in September with a 1.215 OPS. His September line includes a 227 wRC+ and 1.6 fWAR.
Why it matters: The month extends an August rebound that had him at .287/.364/.497 since Aug. 1. That timing lands with six postseason spots claimed and the rest still being decided ahead of October.
By the numbers: September: .373 AVG, .468 OBP, .746 SLG, 1.215 OPS, 6 HR, 227 wRC+, 1.6 fWAR. Since Aug. 1: .287/.364/.497, 8 HR, .861 OPS.
What to watch: Watch whether the September contact carries through the final regular-season week into October.