There were equally ugly scenes at the Kenan Memorial Stadium in Chapel Hill, as North Carolina (NC) State defeated the University of North Carolina (UNC) 35-30 for its fourth consecutive win in the rivalry game. Running back Hollywood Smothers punched in a two-yard touchdown to give NC the lead with 25 seconds left in the game.

Rivalry week matchups are always heated with tensions and resentments building. But four annual clashes ended with fights between opponents when the winning road team attempted to plant a flag on the home field of their adversary to punctuate a victory.

Another fight broke out in college football on Saturday, as Florida and Florida State scuffled after the Gators planted a flag at midfield:

Flag planting during rivalry week ignited chaos across college football, with many blaming Baker Mayfield for sparking the controversial trend. Mayfield notoriously planted Oklahoma's flag at midfield in 2017 after his fifth-ranked Sooners notched a 31-16 victory over the Buckeyes.

A fight broke out after a Florida flag was planted on FSU's midfield logo after the game. Florida State coach Mike Norvell ripped it out.

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

Ohio State and Michigan, one of the sport’s most heated rivalries, started the day’s chaos when a fight broke out after the Wolverines upset the No. 2 Buckeyes. A group of Michigan players attempted to plant a UM flag at midfield at Ohio Stadium. The fight got so heated that multiple law enforcement agencies had to step in and break it up.

College football was dominated by flags on Saturday. Not the ones thrown by officials — the ones planted by players in the middle of the field. Michigan, North Carolina State and Florida celebrated road wins by displaying flags on the logos in the middle of their rivals’ stadiums.