Farmer was optioned back to Triple-A Toledo after Tuesday's game, MLB.com's Jason Beck reports.
He soaked up 2.2 innings out of the bullpen Tuesday in relief of Anibal Sanchez, who lasted just 4.1 frames. Farmer proceeded to give up three runs on four hits and three walks while needing 56 pitches to pitch less than a third of Tuesday's game. The Tigers will summon a fresh arm from Toledo on Wednesday to take Farmer's place.