BOSTON — Tom Brady has undergone a second procedure in 10 days on his injured left knee, according to a published report.

The Boston Globe reported Friday that the New England Patriots quarterback had the procedure Wednesday for an infection in his left knee that was operated on Oct. 6.

Brady's agent, Donald Yee, did not respond to a phone call or an e-mail. Calls to the Patriots and the doctor who performed the first surgery in Los Angeles, Neal ElAttrache, were not returned.

Brady suffered the season-ending injury in the opener against the Kansas City Chiefs.