Adam Wainwright has had minor surgery on his right elbow, according to the St. Louis Cardinals.

The operation was an arthroscopic procedure to trim a small piece of cartilage from his pitching elbow.

Wainwright, 33, is expected to begin physical therapy in two weeks and resume his offseason throwing program in eight weeks.

Mike Matheny made no mention of the injury at a news conference to review the season last week. Matheny said medical tests "all came back negative."