Brandon McCarthy, Tyson Ross on DL
McCarthy has a stress reaction in his throwing shoulder that has sidelined him in the past. Ross left Thursday's game against the Minnesota Twins with a strained left side after throwing seven pitches.
Ross had taken the spot in the rotation vacated by lefty Dallas Braden, who had season-ending shoulder surgery earlier this week.
Oakland was playing at the San Francisco Giants on Friday night.
Copyright 2011 by The Associated Press
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