By Larry Fine

NEW YORK (Reuters) - New York Yankees reliever Joba Chamberlain was found to have a ligament tear in his pitching elbow and will likely miss the rest of the season, manager Joe Girardi told reporters Thursday.

The injury was revealed by a test done on the burly right-hander, who had been placed on the 15-day disabled list Wednesday with what was thought to be a strained muscle.

"The interesting thing about this is if you do every strength exercise on Joba, he passes it with flying colors," Girardi said.

Chamberlain was 2-0 with a 2.83 earned run average in 27 appearances.

Losing Chamberlain would further hurt a depleted bullpen that was considered one of the team's strengths going into the season.

Also on the disabled list were set-up man Rafael Soriano and lefty specialists Pedro Feliciano and Damaso Marte.

(Editing by Mark Lamport-Stokes)