Lowrie, who went on the disabled list Aug. 5, had been dealing with discomfort in the foot for more than a month, and it showed in his performance: He hit just .177 over his last 15 games, moving his season average to .263.
The 32-year-old Lowrie, whose career has been continually plagued by injuries, finished his 2016 season with two home runs and 27 RBIs in 87 games. The A's reacquired the veteran in a trade during the offseason, and he's under contract for one more season.
In the meantime, the A's will continue to use a platoon of Max Muncy and Tyler Ladendorf at second base.
Jane Lee has covered the A's for MLB.com since 2010. Follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.