Official Rules(view all)

NFHS 3-2-3

NFHS 3-2-3/OBR 6.01f

If a base coach is touched by a ball that is play while the coach is on fair territory, it is interference. The runner or batter being played against would be called out.

[OBR: the coach is only called out if it was intentional or the coach failed to avoid the play when he should have been out of the way.]