Trends!

• The four dirtiest teams in this sample were the University of Texas San Antonio, UMass, Idaho, and South Alabama, all of whom made the jump from lower-level football to the FBS at some point in the last decade. This result might make sense to anyone who's found themselves physically outclassed in competition — sometimes your only recourse is to hack, shove, and elbow and hope the ref doesn't see it — except that UTSA was actually not bad last year, its first at the FBS level, putting up an 8-4 record. UTSA's coach, by the way? Larry Coker, late of the University of Miami.

• The most misbehaving team of the last decade in a single season: last year's UCLA squad, which racked up a remarkable 45 personal fouls and eight unsportsmanlike conducts over the course of 14 games.

• The West Coast is definitely NOT mellow when it comes to football. Seven of these squads — UCLA, Utah, Oregon State, Oregon, Arizona State, USC, and Washington State — are members of the Pac-12. SoCal and the Portland area getting testy!

• In less surprising stereotype news, Texas is all ABOUT violent fouls and trash-talking. Texas Tech, Texas State, Texas, and the aforementioned UTSA all crack the top 20, with Baylor (22), UTEP (28), Texas A&M (29), and TCU (32) just outside the chart. Only 10% of FBS teams are from Texas, but a quarter of the dirtiest 32 teams play there. Meanwhile, only one Texas team (Rice) is on the cleanest-teams chart below.