MILWAUKEE (AP) -- Brewers starter Yovani Gallardo will have surgery Tuesday to repair a torn ligament in his right knee and will likely miss the rest of the season.

Gallardo says there's no chance he can avoid having surgery on his anterior cruciate ligament and he'll complete his rehabilitation in Milwaukee. He hopes to return in September or October, but players typically need four to six months to recover.

The 22-year-old right-hander was expected to play a prominent role as the Number Two starter behind Ben Sheets after he went 9-5 with a 3.67 earned run average following his midseason callup last year.

But Gallardo, who had arthroscopic surgery on his left knee just before spring training, made three starts before being injured while trying to hurdle a baserunner against the Chicago Cubs on May 1st.

(Copyright 2008 by The Associated Press. All Rights Reserved.)