The Arizona Wildcats' defense did not live up to expectations this season. Sure, Scooby Wright III's injury played a big part in that, but as a whole, the team's depth and schemes were exposed all season. After finishing 80th in scoring defense in 2014, the Wildcats dropped to 106th this season.
Changes were needed, and the program announced on Monday that defensive coordinator Jeff Casteel and defensive line coach Bill Kirelawich will not be returning to the coaching staff next season.
Kirelawich, who has coached for 46 years, was expected to retire anyway, so his departure isn't a surprise.