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Jameson Taillon Leaves With Left Hamstring Strain

Monday’s MRI will set the length of his absence and force the Cubs to cover starts with several regulars already on the injured list.

Overview

  • Taillon exited one batter into the second inning of Sunday night’s game after walking Matt Chapman and signaling for trainers, and the team diagnosed a left hamstring strain.
  • Taillon said he expects to go on the injured list and will have an MRI Monday, and he does not believe the issue will require surgery.
  • Javier Assad relieved Taillon and delivered 6.1 scoreless innings, giving the Cubs an immediate on-field stopgap after the early exit.
  • The loss compounds an already thin rotation that includes Matthew Boyd, Cade Horton and Justin Steele on the injured list, and removes innings the club badly needs.
  • With Taillon’s 2026 struggles (a 5.19 ERA and a major-league-high 20 home runs allowed) limiting his on-field value, the Cubs are likely to use the 15-day IL, stretch relievers or call up depth arms while the MRI determines the exact timeline and next steps.