BOSTON —  The Seattle Mariners have activated right-handed reliever Shawn Kelley from the 15-day disabled list and optioned infielder Mike Carp to Triple-A Tacoma.

The team said the 25-year-old Kelley would be available for Friday night's series opener against the Red Sox at Fenway Park.

Kelley is 1-1 with a 1.54 ERA in 10 games as a surprise rookie contributor in Seattle's bullpen. The non-roster invitee to spring training has not allowed a run in nine of his 10 appearances this season.

He's been out since May 6 with a strained oblique muscle in his left side. Kelley threw three pitches against Texas on May 5 before leaving in pain.

The 23-year-old Carp batted .375 in five games with Seattle after a promotion from Tacoma.

(This version CORRECTS spelling of Kelley in slug and 2nd graf.)

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