The Phillies announced Saturday that pitcher Zack Wheeler will be out for the rest of the season.

A statement from the team said: Wheeler was diagnosed with venous thoracic outlet syndrome, and the recommendation is to undergo thoracic outlet decompression surgery in the coming weeks. Details of the surgery are forthcoming. The timeline of recovery from the surgery is generally 6-8 months.

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Wheeler had been dealing with something unknown in the shoulder since around the All-Star break and it caused him to be moved back a few days on a start. A dip in velocity and command heightened questions about what may be wrong, but it was after a start in Washington on August 15, in which Wheeler pitched five innings, gave up two runs and struck out si

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