What do you say?

[Jurassic Referee]

Originally Posted by BLydic

I wouldn't assume the player knows he/she can't run the endline on a frontcourt throw-in.

Me neither, but it's the coach's responsibility to teach their players that, not ours. If you want to remind a player, fine. If you don't though, it is never the official's fault if he/she has to call a violation.