Coslet's unit ranked near the bottom of the league in both points scored and total yards.
His 1998 defensive unit ranked No. 1 nationally in total defense and pass defense.
This year the two units ranked among 2 of the 10 worst reactors in the country, according to Public Citizen, an environmental watchdog group.
Tech's 1999 defensive unit led Division I-A in scoring defense and ranked third in both total and rushing defense.
Westhoff is considered a "pioneering special teams coach" and his special teams units have generally ranked very highly in the NFL.
Last season, the power-play unit, which currently is the best in the league, ranked 17th, and the penalty-killing unit, currently rated 13th, was 19th at midseason.
His defensive unit greatly improved from 2009 as the Bison's ranked 7th nationally in scoring defence (18.21 ppg) and turnover margin (+1.07 avg).
In 2001, his defensive unit ranked among the nation's top 30 in five different categories at season's end.
Fuller instantly became a favorite among Texas fans and alumni, as his defensive units frequently ranked among the nation's best.
Muschamp's unit also ranked second in the NFL with 49 quarterback sacks.