Since being optioned to Triple-A Toledo on Aug. 20, he's made four appearances and thrown for six innings. He's allowed two hits, three walks, no runs and has seven strikeouts.
In 18 major league appearances he has an ERA of 9.17 (xFIP of 4.28), 11 strikeouts and four holds. He walked six in 17.2 innings.
More players could be brought up to the Tigers than just Weinhardt, but the Mud Hens' season still has about a week left, which could play into the timing of such matters.