Wheeler was diagnosed with venous thoracic outlet syndrome, and will undergo surgery after having a blood clot removed in his right arm. The expected recovery time is six to eight months.

Philadelphia Phillies ace Zack Wheeler’s season is over. The Phillies say Wheeler has been diagnosed with thoracic outlet syndrome and will require additional surgery that’s expected to sideline him for six to eight months.

But there was a consensus among the specialists. Wheeler was diagnosed with venous thoracic outlet syndrome and must undergo surgery to remove a rib. The Phillies estimate he’ll need six to eight months of recovery, which means his absence could seep into the 2026 season.