The Tigers reinstated Brieske (thigh) from the 60-day IL on Friday.
Brieske has been on the injured list all season after suffering a left adductor strain late in spring training. He began a rehab assignment May 5 and has since given up four earned runs across 7.2 innings between Single-A and Triple-A. Now fully healthy, he'll return to the Tigers' bullpen, replacing Casey Mize (groin) on the active roster and Brant Hurter (back) on the 40-man.