Young was scheduled to do some running in the outfield and to take batting practice.
"I'm optimistic I can come back tomorrow," Young said. "It sucks watching from the sidelines."
Young strained a left quad muscle during the A's 19-inning game on April 29. He was a late game replacement and had two hits before coming out.
"The last thing I want to do is come back and reaggravate something," Young said. "The more I move around, the more comfortable I feel."
Rick Eymer is a contributor to MLB.com This story was not subject to the approval of Major League Baseball or its clubs.