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Zack Wheeler Diagnosed With Venous Thoracic Outlet Syndrome, Season Ends With Surgery Planned

Philadelphia projects a six- to eight-month recovery after decompression surgery.

Image
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
PHILADELPHIA, PA - DECEMBER 08: President of baseball operations Dave Dombrowski of the Philadelphia Phillies talks to the media during the introductory press conference for Trea Turner at Citizens Bank Park on December 8, 2022 in Philadelphia, Pennsylvania. (Photo by Mitchell Leff/Getty Images)
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.

Overview

  • After reporting right-arm heaviness, Wheeler was placed on the injured list for a blood clot and underwent a thrombolysis procedure on Aug. 18 to remove it.
  • Multiple specialists recommended thoracic outlet decompression, a surgery that typically involves removing part of a rib to relieve vascular compression.
  • Team president Dave Dombrowski expressed confidence that Wheeler will pitch again, and Wheeler posted a message thanking fans and targeting a 2026 return.
  • The Phillies will lean on Cristopher Sánchez, Ranger Suárez, Jesús Luzardo, Aaron Nola and Taijuan Walker, with top prospect Andrew Painter a possible reinforcement.
  • Wheeler’s 2025 ends at 10-5 with a 2.71 ERA and an NL-leading 195 strikeouts, as Philadelphia maintains a six-game NL East lead.