Cal's Tyrone Wallace out after fracturing right hand

California point guard Tyrone Wallace, the Golden Bears' leading scorer, will not play in Friday's NCAA tournament first-round game after suffering a fracture in his right (non-shooting) hand, the school confirmed Thursday.

Wallace suffered the injury during practice Wednesday afternoon. The school said in a statement Thursday that Wallace is expected to be out three to five weeks.

Coach Cuonzo Martin described the injury to Wallace's hand as having happened in "what we call a dry drill."

"It's not contact, really," he said. "It's kind of a walk-on, he's moving his feet, sliding. He got his hand caught up in a guy's shirt, just unfortunate. But it wasn't really 5-on-5 contact. So it just is a tough, tough deal."

The Golden Bears, a No. 4 seed, open tournament play against Hawaii on Friday.

Martin said thatSam Singerwill start in place of Wallace, but said it won't be Singer's responsibility alone to make up for Wallace and his 15.3 points per game. Martin said much of that scoring load will need to fall to Ivan Rabb and Jaylen Brown.

"I don't know if demand is the right word, we need to be more assertive and get (Rabb) the ball. He needs to have a better presence of wanting the basketball,'' Martin said. "Same way with Jaylen. He hasn't shot the ball well, but we need him to be aggressive at all times because he puts so much pressure on the defense.''

Wallace previously fractured his right hand during a January practice and missed five games.

"It always starts with us, so we're going to stick to what we do," Hawaii coach Eran Ganot said Thursday, on facing Cal without Wallace. "This is a team that is far from one-dimensional, and they're very talented. This is a team that's very well-coached, they defend, they rebound, they share the ball, they've played without Wallace before, obviously a five-game stretch where they performed. So, we're going to, obviously, look a little bit [at] those five games.

"And like I said, there's just so many points of attack they have, they can come at you, and so we're going to continue to prepare for whatever we can see."

A 6-foot-5 senior, Wallace leads the team in scoring (15.3 points per game), assists (4.4), steals (1.0) and minutes (32.2). He also is averaging 5.4 rebounds per game.

Wallace is coming off one of his best games of the season, having scored 26 points in a loss to Utah in the Pac-12 semifinals last week.

Wallace's injury comes on the heels of the firing of assistant coach Yann Hufnagel after the university found that sexual harassment allegations against him were substantiated. In addition, UC Berkeley officials are reviewing whether Martin correctly handled the allegations against Hufnagel.

ESPN's Chantel Jennings and The Associated Press contributed to this report.