Cal senior point guard Justin Cobbs will be out six to eight weeks after breaking a bone in his right foot in a San Francisco Pro-Am game Monday.
Coach Mike Montgomery said Cobbs will have surgery Friday.
"No guarantees with the feet. But that's the smartest course of action and the quickest way to get back," Montgomery said.
On Twitter, Cobbs wrote, "minor setback for a major comeback." He averaged 15.1 points and 4.8 assists per game last season.
The Bears open Nov. 8 against Coppin State.
Stanford's Patrick Rodgers survived a playoff to advance to match play, then beat Sean Dale 3 and 2 in the first round of the U.S. Amateur at The Country Club in Brookline, Mass. Rodgers will face Greg Eason in the second round. Eason beat 2012 runner-up Michael Weaver 3 and 2. Brandon Hagy, Weaver's teammate at Cal, posted a 19-hole win over Ricardo Gouveia. Also, Blake Morris ousted USF's Cory McElyea 4 and 3.
Former Saint Mary's star Patty Mills had 20 points as Australia posted a 70-59 win over New Zealand in Game 1 of the FIBA Oceania Championship in Auckland. Former Gael Matthew Dellavedova added 11 points for the Boomers. Game 2 is Sunday in Canberra.
Nicole Gibbs, a two-time NCAA singles champion while at Stanford, was awarded a wild card into the U.S. Open, which starts Aug. 26 in New York. Gibbs turned pro this summer.
The Associated Press and wire services contributed to this report.