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04/23/08 10:49 PM ET

Roberts shows support for Lewis

Giants outfielder rejoins team after knee surgery

SAN DIEGO -- Dave Roberts, the Giants' sidelined left fielder, knows that his activity might not increase much after he leaves the disabled list.

Roberts, who resides locally, rejoined his teammates and will return to San Francisco with them Thursday to continue rehabilitating his surgically repaired left knee. In Roberts' absence, Fred Lewis has taken over left field and has emerged as the team's leading offensive force. Befitting his reputation as a true gentleman, Roberts expressed happiness for Lewis.

"I told Freddie that this is an opportunity for him to really shine. I wish him well," Roberts said Wednesday.

Roberts recalled that when he played for the Los Angeles Dodgers from 2002-04, veteran center fielder Marquis Grissom encouraged him even though they competed for playing time.

"[He] was a mentor for me and really pushed me and wanted me to do well," Roberts said. "I've learned in all my years of being around the game, you want to root for guys and wish everyone well. Things are going to play out the way they're supposed to play out anyway."

Roberts, who underwent surgery April 12, is expected to miss at least three months. He hopes that he can resume playing as quickly as possible.

"I'm just relieved that I got this thing taken care of and can move forward now," said Roberts, who hit .118 (2-for-17) in six games before being shelved.

Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.