Detroit designated Below on Wednesday to make roster room for Jose Valverde.
Below, 27, threw 46 1/3 innings in 27 games with one start for the Tigers last year.
The 6-foot-3, 220-pounder was 1-2 with a 2.10 ERA in four starts at Triple-A this season. In 25 2/3 innings, he has 15 strikeouts and four walks.
Below spent parts of 2011-12 in the big leagues, logging a total of 75 1/3 innings with a 4.06 ERA.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter