San Jose Sharks forward Raffi Torres will miss the start of the upcoming season after undergoing surgery for an infection in his previously surgically repaired right knee.

Sharks general manager Doug Wilson announced the news on Wednesday, about one month before the start of training camp.

"Raffi recently underwent a surgical procedure in Toronto to alleviate an infection in his previously surgically repaired right knee," Wilson said. "The procedure involved removing the graft previously implanted in his repaired knee in September 2013.

"Raffi has started a rehabilitation phase, but will need to repeat the surgical procedure to repair the ACL damage suffered on Sept. 20, 2013. We expect Raffi to return to the team during the 2014-15 season, but no official timeline for his return is being set at this time."

Torres initially got hurt last pre-season and underwent surgery for a torn ACL.

He returned in late February and played five games before sitting out the rest of the regular season.

Torres played hurt through a seven-game, first-round playoff loss to the Los Angeles Kings, who went on to win the Stanley Cup. 

Torres had three goals and two assists in the regular season and two goals and one assist in the playoffs.