Brieske (right forearm soreness) will not return this season, Evan Woodbery of MLive.com reports.
His rehab is nearly done, but he's run out of time to make a responsible return to the big-league rotation. Brieske, 24, had a 4.19 ERA, 1.20 WHIP and 54 strikeouts in 81.2 innings over 15 starts in the majors this year as a rookie.