Wheeler was placed on the 15-day injured list with right forearm tendinitis Thursday, retroactive to Aug. 22.
Wheeler struggled late in his start against the Mets on Saturday and has now given up 10 runs in 11.1 innings over his last two starts to take back-to-back losses. His injury may have contributed to his struggles, and he'll now have additional time to recover after landing on the injured list. Bailey Falter is expected to start on normal rest Friday against the Pirates to take Wheeler's place in the rotation. Wheeler is eligible to return as early as Sept. 6, and the Phillies hope that he'll be able to rejoin the active roster after missing just two turns through the rotation, according to Todd Zolecki of MLB.com.