Sherrill was unavailable during Tuesday night's extra-inning loss because of a mysterious discomfort he felt during pregame warmups. He last pitched Saturday, getting a save, and said he had no discomfort either Sunday or Monday.
"I have no idea how it happened," Sherrill said. "It just tightened up and I took it slow and they did the MRI to make sure it wasn't something major. It reacted good to treatment. I threw a bullpen [15 pitches] this afternoon and it went good. Everything's good."
But everything wasn't good Tuesday night when Sherrill was unavailable. Manager Joe Torre used four relievers over the final 3 2/3 innings and three of them -- Ronald Belisario, Hong-Chih Kuo and loser James McDonald -- allowed runs. Torre said Sherrill "would have been in the game" in one of those slots had he been available.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.