Warriors guard Patrick McCaw will miss at least four weeks with a non-displaced fracture in his left wrist, a team source has confirmed with The Chronicle. ESPN was first to report the news. McCaw, who didn't travel with the team to Portland for Wednesday night's game against the Trail Blazers, is expected to wear a cast for 10 days. He will be re-evaluated by Golden State doctors on March 14, which puts his earliest return for that night against the Lakers — a stretch that would have him missing 10 games. "It's definitely worrisome," Warriors head coach Steve Kerr said after shoot-around Wednesday morning, roughly an hour before the severity of McCaw's injury was known.