Grizzlies guard Ronnie Brewer will miss at least three weeks with a torn hamstring.

Brewer suffered the injury on Friday night while making his debut with Memphis, who acquired him from Utah ahead of Thursday's trade deadline.

He played jsut 12 minutes before collapsing on the court with the injury.

"We thought it was going to require surgery. But they (team doctors) told me it depends on how I react to treatment," Brewer said. "You have to stay positive and stay focused. I'll work hard in rehab and hope for the best."