Wheeler was diagnosed with thoracic outlet syndrome and will require additional surgery that’s expected to sideline him for six to eight months, the team announced Saturday.

The Philadelphia Phillies will not have their ace the rest of 2025. Right-hander Zack Wheeler will have surgery to treat venous thoracic outlet, the team announced Saturday. The surgery typically comes with a 6-8 month recovery, meaning Wheeler's availability for the start of 2026 could be impacted. He last appeared in a game on Aug. 15.

The left-hander struck out 12 in 6 1/3 dominant innings Tuesday in a win over the Seattle Mariners. He allowed two runs - one was inherited - and his season ERA is now 2.46, Incredibly, he threw 26 of 27 first-pitch strikes. Sanchez left the field to a standing ovation.