Zach Cozart from Ole Miss was involved. He was beaned by someone for Peoria, but apparently that was because someone from his team "admired a home run too long". Then the guy who hit the home run got HBP, thought it was intenional, but didn't charge the mound. However, the next batter hit a DP play and the runner who got hit made a really hard slide into the other teams SS breaking the guys leg. Then the managers got into it (one was coaching third base in front of the other teams dugout, and then the pitcher tried to fire a ball into the dugout, however, it hit a bar on front of the dugout and went into the stands and obviously hit someone. Then, all hell broke lose, 15 guys got ejected including both managers.
It was a mess.
Sidenote- one of the managers wasn't there. That's because it was Ryne Sandberg, who is in Cooperstown to get inducted into the HOF. So, it was really an assistant coach that got into the fracas.