Source: CC Sabathia down 30 pounds

New York Yankees pitcher CC Sabathia has lost 30 pounds from offseason workouts, a source told ESPN The Magazine's Buster Olney.

The ace left-hander is trying to keep pressure off his right knee, which required offseason surgery. Sabathia underwent arthroscopic surgery in late October to correct a small meniscus tear.

Sabathia went a league-leading 21-7 in 2010 with a 3.18 ERA in his second season with the Yankees. He was 2-0 with a 5.63 ERA in three postseason starts.