bob jenkins wroteIn the real world, at what point would it be too late to "ref up?"
For me, in a real high school game, when the throwin ends.
4-42-5: The throw-in ends when:
a. The passed ball touches or is touched by another player inbounds.
b. The passed ball touches or is touched by another player out of bounds,
except as in 7-5-7.
c. The throw-in team commits a throw-in violation.