The Tigers optioned Workman to Triple-A Toledo on Sunday.
Workman ended up being the roster casualty when Kerry Carpenter (shoulder) was activated from the 10-day injured list Sunday. After being called up from Triple-A on May 10, Workman appeared in 16 games for Detroit but slashed just .158/.158/.553 with a 42.1 percent strikeout rate over 38 plate appearances.