New defensive hand-check rules have resulted in a small increase in fouls this season in college basketball but UNC has been affected disproportionately, a new analysis by RealGM.com finds.

“Some coaches that rarely foul, like Roy Williams have seen their team struggle to adapt to the new rules,” writes Dan Hanner of RealGM.com.

Over the last five years, Williams’ teams have averaged allowing 25 free throws per game. This year the number is up to 42.

The analysis says that Williams, and others including Bill Self and John Thompson Jr., have struggled to teach their teams how to play defense with the new rules and that a substantial uptick in fouls committed can be a major hindrance to winning.

To read the full report, please click here.