CELEBRATORY FLAG PLANTING is not new in college football. It's hard to pin down how long it has been going on, but cursory research found examples dating back at least 20 years.

Amid a host of college football rivalry clashes, the Michigan-Ohio State fracas kickstarted a day full of jawing coaches, postgame punches and flag-planting field assaults. Left hooks were landed ...

College sports leaders would like to figure out a way to put an end to the postgame flag-planting celebrations that sparked physical confrontations around the country during rivalry weekend, most ...

From 'win or be fired' to 'untouchable,' every coach gets rated by our panel of CBS Sports college football experts ...

Flag planting -- and the postgame fights that followed -- was all over college football during Rivalry Week. What's next ahead of the first home College Football Playoff games?

Amid a host of college football rivalry clashes, the Michigan-Ohio State fracas kickstarted a day full of jawing coaches, postgame punches and flag-planting field assaults. Left hooks were landed ...