Arizona freshman Allonzo Trier, who leads the seventh-ranked Wildcats with 14.8 points per game, is expected to miss four to six weeks after suffering a broken right hand in Saturday's 103-101 four-overtime loss at USC.
Trier suffered the hand injury late in the game. He stayed in the game but clutched his injured hand multiple times throughout the fourth and final overtime.
This is the third significant injury for an Arizona squad (13-3, 1-2 Pac-12) that lost to UCLA and USC on Thursday and Saturday, respectively, and will now enter this week's matchup against Washington without its top scorer.
Kaleb Tarczewski recently returned after missing eight games with a foot injury.
Arizona, the preseason pick to win the Pac-12, also lost Ray Smith, ranked 29th in the 2015 class by RecruitingNation, after he suffered a season-ending ACL injury in October.