3 Man Mechanic ?

[PG_Ref]

Originally Posted by CMHCoachNRef

Refsmitty,
This is something that is good to cover in pre-game. When the ball is in the FRONTCOURT, the Center should not be calling a back court violation as the division line is the trail's "line." When in transition or in a pressing situation, the Center frequently is the one who is in a better position to call a back court violation -- precisely for the reason you mention in your post.

You may want to revisit the official's manual on this one. The "C" should help the trail with division line violations. Even when the ball is in the front court, the "C" has the nearer free-throw lane line extended all the way to the division line. Maybe it's just a local thing that they don't want the "C" to make that call. But technically, the "C" can.