Milwaukee Brewers third baseman Mat Gamel will be out at least six weeks because of a torn muscle in his right shoulder, team officials said Thursday.

An MRI performed Wednesday revealed what the team said is a "slight" tear in his latissimus dorsi, the large muscle behind the right shoulder.

Gamel last played March 8 against Seattle but left in the third inning after a throw to third base. He since has been limited to taking ground balls in drills and hasn't thrown or swung a bat in 10 days.

The 23-year-old hit .242 with five homers and 20 RBIs in 61 games for the Brewers last season.