Olson was optioned to Triple-A Nashville on Thursday.
Olson made just one appearance with the Athletics before being sent back to Nashville, going 0-for-3 with two strikeouts while playing the entire game in left field. He's now just a combined 2-for-25 in his two major-league stints. He'll head back to Triple-A for some more seasoning, though he could earn another promotion should an opportunity in the majors arise.