Wheeler Begins Triple-A Rehab Saturday, Phillies Chart Starter's Return

Zack Wheeler stepped off the mound at Carpenter Complex on Monday having retired seven of eight batters across two innings, throwing 29 pitches and touching 94 mph on the radar gun. That performance was enough for Phillies manager Rob Thomson to give the green light: Wheeler will begin a minor-league rehab assignment Saturday, March 28, with Triple-A Lehigh Valley against the Toledo Mud Hens at Coca-Cola Park in Allentown, first pitch scheduled for 4:35 PM.

It marks the first time Wheeler has faced live hitters in an uncontrolled setting since undergoing venous thoracic outlet syndrome surgery on September 23, 2025. He is expected to work three innings in that initial outing, a carefully calibrated step in a return the Phillies have managed with notable patience since the procedure.

Thomson left no ambiguity about his confidence level after watching Wheeler work through his full arsenal in Monday's simulated game. "His command has been normal. The velocity is normal for this time of Spring Training for him. I don't have any reason to not be confident," the manager said. Wheeler himself kept it brief: "A successful spring."

The plan calls for three or four rehab starts before Wheeler rejoins the Philadelphia rotation. Wheeler put it plainly when asked how many outings he would need: "Four-ish, give or take." With pitcher rehab assignments capped at 30 days under MLB rules, the clock starts Saturday. If the full window is used, Wheeler's rehab period would close during the final week of April, though a mid-April return remains possible if he progresses on schedule.

Wheeler addressed questions about his physical condition, noting he has not yet returned to his previous playing weight. "I pitched at 185 when I was with the Mets and I did well and I threw just as hard," he said, signaling no concern about where his body currently sits in the recovery process. He would like to gain back approximately 10 pounds, but the Phillies have made clear that his velocity and command metrics are where they need to be.

Wheeler will open the 2026 season on the 15-day injured list, but he will travel with the Phillies to Philadelphia on Monday evening for Opening Day against the Texas Rangers at Citizens Bank Park on Thursday. Between his IronPigs starts, he can return to Philadelphia to be evaluated by the team's medical staff.

The Phillies will also be monitoring right-hander Orion Kerkering, who threw one inning at the complex Monday in his third spring appearance. Kerkering will open the season on the IL with a strained right hamstring but could be activated as early as April 7. He is scheduled to pitch Wednesday in Clearwater before making his own Triple-A appearance on Saturday.

For Wheeler, the rehab arc points toward a rotation slot in April. Four starts at Lehigh Valley, a clean bill of health, and one of Philadelphia's most important arms slots back into a rotation that has been built around him.