WATCH: Dirty hit by Harry Douglas on Chris Harris leads to sideline fight

Things got testy in the second quarter of the game in Nashville between the Tennessee Titans and Denver Broncos.

The two teams got into a heated exchange that actually spilled onto the sidelines.

The fight was precipitated by a block at the knees that Harry Douglas laid on Chris Harris.

The Broncos themselves have plenty of players who walk the fine line between “aggressive” and “dirty.” So, this one may not be over.

A bit after this fight, Tennessee went ahead of the Broncos — currently on the outside looking in on the AFC Playoff front — by 13 points with a long field goal by Ryan Succop.