Thanks Ahmet, great catch. One clarification, Pickle Sensei is for solo training, so the player locks in from a start zone and swings alone. The multi-person logic is there for bystanders, like someone on the next court or walking behind the fence. Your point still applies though. If tracking ever hands off to a passerby, or the player reselects, the motion history should reset so the new person isn't compared to the old one's history. Right now only the anchor moves on a handoff, so I'm going to make it an explicit reset of the body-scale history, readiness window and motion interval, and add a replay case for it. Thanks for the detailed read.

Thanks for clarifying the solo-training setup. The intended athlete is established in the start zone; the additional people are distractions, not alternative players to score. That makes a tracking handoff a loss-of-target event even before the motion state is reset.

For the replay, I would also check whether scoring remains suspended until the original athlete is reacquired or manually confirmed. Resetting the history removes the discontinuity, but rebuilding a clean readiness window around a passerby would still produce a valid-looking result for the wrong person.