If all goes as planned this season, there's only one quarterback that we'll really have to worry about this year, and that's Anu Solomon, who is the first returning starting quarterback of the Rich Rodriguez era at Arizona.
People may worry that there are only three scholarship quarterbacks on the roster this year, but from where they all were last year, they've all significantly improved.
After dealing with an ankle injury over the course of the second half of 2014, Anu Solomon showed up to fall camp as a much stronger, more athletic quarterback, and that's paid off in a big way as far as his physical game is concerned.