Arizona quarterback Matt Scott, who suffered a concussion in last week's loss at UCLA, is listed as doubtful for Saturday's game against Colorado, according to the injury report released Thursday by Arizona's coaching staff.
If Scott is unable to play, junior B.J. Denker will make his first start for the Wildcats.
Two other starters were also listed as "doubtful" due to concussions: free safety Jourdon Grandon and left guard Chris Putton. Freshman Vince Miles is listed as Grandon's backup, and freshman Cayman Brundage is listed behind Putton.
Hank Hobson, who suffered a neck injury against the Bruins, has been ruled out of this week's game.
Two-way player (fullback, defensive end) Taimi Tutogi is listed as questionable with a neck injury, and reserve defensive lineman Kirifi Taula is probable with a shoulder injury.