KANSAS CITY — The Toronto Blue Jays lost reliever Luis Perez for the rest of the season Monday when an MRI on his left elbow revealed a torn ulnar collateral ligament, the latest in a long line of blows to the club’s pitching staff.

Perez left Sunday’s 11-9 victory over the Chicago White Sox after allowing a single to Alexei Ramirez during the seventh inning, and was placed on the disabled list right after the game.

He’s the seventh Blue Jays pitcher to be placed on the DL so far this year, and will be the second with a torn ligament, joining Kyle Drabek.

The Blue Jays, confirming news first reported at sportsnet.ca, added in a release that Perez will seek a second opinion before a course of action is determined.

In 42 innings over 35 games this year, the 27-year-old was 2-2 with a 3.43 earned-run average while becoming an important and reliable part of the Blue Jays bullpen.

A replacement for Perez on the big-league roster has yet to be named.