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Phillies' Zack Wheeler Diagnosed With Venous Thoracic Outlet Syndrome, Set for Season-Ending Surgery

Specialists recommended decompression surgery after last week’s blood clot removal near his right shoulder, with a projected six- to eight-month recovery.

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Aug 10, 2025; Arlington, Texas, USA;  Philadelphia Phillies starting pitcher Zack Wheeler (45) throws during the third inning against the Texas Rangers at Globe Life Field. Mandatory Credit: Kevin Jairaj-Imagn Images/File photo
ARLINGTON, TEXAS - AUGUST 10: Zack Wheeler #45 of the Philadelphia Phillies looks on in the first inning during a game against the Texas Rangers at Globe Life Field on August 10, 2025 in Arlington, Texas.
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Overview

  • The team projects a six- to eight-month rehabilitation that ends Wheeler’s 2025 campaign and could position a return at the start of 2026 if recovery stays on schedule.
  • Wheeler underwent thrombolysis on Aug. 18 to remove a blood clot near his right shoulder, a procedure performed by Dr. Paul DiMuzio at Thomas Jefferson University Hospital.
  • After multiple evaluations, doctors diagnosed venous thoracic outlet syndrome and advised decompression surgery to be scheduled in the coming weeks.
  • Philadelphia plans to rely on Cristopher Sánchez, Ranger Suárez, Jesús Luzardo, Aaron Nola and Taijuan Walker to cover the rotation over the stretch run and postseason.
  • Before the shutdown, the 35-year-old was 10-5 with a 2.71 ERA and an NL-leading 195 strikeouts in 149 2/3 innings.