If you have watched Arizona Football over the last decade or so one of the few constants they have seemed to have is a struggling defense.
There have been bright spots, sure, but even at their best no one would have ever considered comparing them to the Desert Swarm days of the 90s.
Many different coordinators have taken a shot at getting Arizona back to that level. Jeff Casteel came to Arizona with Rich Rodriguez and had mild success, but could not sustain and was ultimately replaced by Marcel Yates.
Yates, who arrived from Boise State, was never able to get things going and, after being retained by Kevin Sumlin in 2018 was fired during the 2019 campaign.