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Damon may return to Sox

The Detroit Tigers told Damon on Monday that he had been claimed on waivers by the Boston Red Sox. But Damon has a partial no-trade clause included in the one-year, $8-million contract he signed last winter, and Boston is on the list of clubs he can veto.

He has until Wednesday afternoon to make a decision, but one person close to him said Damon is reluctant to accept the waiver assignment.

Stephen Strasburg is headed back to the disabled list, and his prized right arm will undergo yet another examination that will largely determine whether he pitches again this season.

The Washington Nationals rookie will have a second MRI exam to see if anything more than a strained tendon in his forearm caused him to grimace after throwing a changeup in Saturday’s game at Philadelphia. Strasburg was removed from the game and underwent an MRI on Sunday.

The MRI “showed some things on there that led us to set up another MRI,” general manager Mike Rizzo said. The GM said the upcoming test will be done in the “next day or two” and will use an injection of dye that should render “a full view of what’s going on in there.”

Retired slugger Sammy Sosa is upset with the Chicago Cubs for not retiring his No. 21 jersey, telling a magazine that the organization doesn’t care about him. … Minnesota Twins left-handed reliever Ron Mahay is out for the rest of the season with a torn right rotator cuff.