The Tigers selected Sammons' contract from Triple-A Toledo on Monday.
Sammons has put up a 4.18 ERA and 78:34 K:BB over 84 innings covering 17 starts with Toledo this season. The left-hander is expected to be used in bulk relief Monday against the Guardians behind starter Beau Brieske, who is unlikely to work more than an inning or two before exiting the contest.