The Oakland A’s optioned right-handed pitcher Ryan Dull to Triple-A Las Vegas, the club announced today.

Dull was recalled from Las Vegas April 22 and allowed five runs on 13 hits in 6.1 innings over five games following his return. He has a 10.29 ERA and .441 opponents batting average in six appearances overall. Dull was on the A’s Opening Day roster before he was optioned to Las Vegas March 27. He has not allowed a run in six games and 9.2 innings with the Aviators.