Members of N.C. State and UNC brawled after the Wolfpack tried to plant their team's flag at midfield – later on, coaches Mike Norvell and Billy Napier exchanged pleasantries.

A fight at Ohio Stadium between Ohio State and Michigan players was just the first across college football’s rivalry week. Wolverines players planted a team

There was certainly no love lost between certain schools over college football’s rivalry weekend. Skirmishes, fights and all-out brawls broke out at several stadiums, with some clashes triggered by teams planting their flag at centerfield in their rivals’ stadiums – a sight that is becoming increasingly common.

Flag plants, profanities, fights and other chaos ignited rivalry week throughout college football. Here is a breakdown of all the heated action.