Farmer gives the Tigers a fresh arm after using six pitchers Monday. He has a 2.19 ERA and 13 strikeouts in 12 1/3 innings this season with the Tigers.
Farmer was most recently optioned to Toledo when the Tigers called up Parnell on June 1. He has a 5.54 ERA in seven Minor League starts.
Despite pitching well in the Majors, this is the third time he has been recalled this season. Farmer has become something of a "toggle guy" for the Tigers, but that doesn't mean he couldn't earn a permanent spot with the club.
"He fits into that category, but shoot, if he's pitching well and someone else isn't, we're going to keep the guy who's pitching well," manager Brad Ausmus said. "It's a performance game."
Cody Stavenhagen is a reporter for MLB.com based in Chicago. This story was not subject to the approval of Major League Baseball or its clubs.