The Tigers activated Flaherty (ankle) from the 15-day injured list to start Sunday's game against the Astros, Evan Woodbery of MLive.com reports.
The veteran right-hander has spent the past couple weeks on the shelf due to a left peroneal strain, but he's ready to rejoin Detroit's rotation after one rehab start with Double-A Erie. Flaherty has yet to find much consistency on the mound in 2026 with a 5.35 ERA, 1.57 WHIP and 78:34 K:BB across 65.2 innings.