Flaherty (ankle) tossed 5.2 innings in a rehab start Tuesday with Double-A Erie, giving up two earned runs on three hits and one walk while striking out seven batters.
Flaherty thew 83 pitches (58 strikes) in the rehab outing, which may be the only appearance he makes in the minors before returning from the 15-day injured list. The right-hander is eligible to come off the IL on Sunday, and he could be activated that day to start the Tigers' series finale versus the Astros in Detroit.