ANAHEIM -- Switch pitcher Pat Venditte, so effective for the A's over the first four major league outings of his career, was placed on the 15-day disabled list Friday with a strained right shoulder.
Reliever Arnold Leon was recalled from triple-A Nashville to take his roster spot before Friday's series opener against the Angels.
Venditte's promotion to the A's last week made waves nationally, as he's the first true ambidextrous pitcher to use both arms in a major league game during the modern era. He has not allowed a run in four relief appearances and 5 2/3 innings, and there was no indication during his time on the mound of any physical problem.
Leon was sent down June 4. The rule about a player needing to spend 10 days in the minors after being optioned is waved because he's replacing an injured player.