[ChuckElias]

Welcome to the forum, Coach. Glad you found us here.

First off, Coach, it's very unlikely that your center got two flagrants. In HS and college ball, a flagrant foul carries automatic disqualification. In other words, you're kicked out of the game for any flagrant foul. That's just a minor point about technical terms, tho. I realize it's not the point of your question.

I can think of two legal ways to get the refs to notice the jersey being held. One, simply have your player yell, "He's holding my jersey!" It may get the official's attention. Be sure not to cry wolf, tho, or the official will just tune out your player's future complaints. Two, have your players pull away from the defender. This stretches out the jersey and gives the official a better chance of seeing the hold.

Those suggestions may or may not be helpful to you. Either way, good luck with your season.