Giants' Wilson set for Tommy John surgery

San Francisco Giants closer Brian Wilson is set to undergo Tommy John surgery to repair his right elbow on Thursday.

The procedure will be performed by renowned orthopedist Dr. James Andrews in Pensacola, Florida. Andrews also performed Wilson's first reconstructive surgery in 2003. He resumed pitching in 2004 and made his major league debut two years later.

Wilson, 30, last pitched against the Colorado Rockies last Thursday. He was erratic with his control but recorded a save. One day later, he informed the Giants' medical staff of physical discomfort in the elbow.

In two appearances this season, Wilson had one save and a 9.00 ERA.

In the absence of Wilson, the Giants will use a closer by committee system with Santiago Casilla, Sergio Romo and Jeremy Affeldt coming out of the bullpen.

Casilla earned a save with a scoreless ninth inning against the Philadelphia Phillies on Tuesday.