Semien is dealing with irritation of the scar tissue in his surgically repaired wrist and will be out Tuesday as a result, Susan Slusser of the San Francisco Chronicle reports.
Semien isn't expected to miss more than the one game. He was out from April 15 through July 5 with the injury, so the A's will gladly take it safe to avoid an aggravation of the ailment. Semien is hitting .280/.329/.400 over 18 games in August.