Kramer's car backfired and Jerry thought it was the starting pistol.
Jerry ate bad clams the night before and needed to urgently get to the bathroom.
Kramer fires a real gun at a pigeon and Jerry thought it was the starting pistol.
Duncan is busy tying his shoelaces and misses the starting pistol.
Jen Gallie hasn't written a bio just yet, but if they had... it would appear here.