What happened: Mason Miller could not hold the ninth in Game 2 before Jackson Chourio ended it with a walk-off. The scrutiny centers on pitch-tipping, with attention on timing cues before the late swings.

Why it matters: A blown ninth in October reshapes late-inning trust and matchup plans for the rest of the series. Miller carried Wild Card pitching form into the NLDS, raising the cost of any correctable tell.

What to watch: Watch whether San Diego adjusts signs or sequencing before Miller's next leverage outing.