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.

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.

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.

To say Saturday was a chippy day in college football would be something of an understatement. The end of the annual "rivarly week," in which teams are typically pitted against their most hated rival,

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