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3w ago

Mets Shift David Peterson to Bullpen as Sean Manaea Steps Into Rotation

Team officials say Manaea’s regained velocity plus Peterson’s stronger relief metrics justify a short-term, performance-driven experiment.

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An image collage containing 3 images, Image 1 shows Baseball player Starling Marte of the New York Mets stands on the field holding a bat during a game, Image 2 shows New York Mets third baseman Bo Bichette reacts after he grounds out against the Washington Nationals, Image 3 shows Mets pitcher David Peterson reacts after he is pulled from the game by New York Mets manager Carlos Mendoza against the Washington Nationals in the fourth inning at Citi Field in Queens, New York, USA, Tuesday, March 29, 2026
An image collage containing 2 images, Image 1 shows Sean Manaea reacts as he walks back to the dugout against the Washington Nationals after ending the sixth inning at Citi Field in Queens, New York, USA, Tuesday, March 29, 2026. , Image 2 shows New York Mets pitcher David Peterson reacts after Cincinnati Reds left fielder JJ Bleday scores

Overview

  • The Mets announced the change on Friday that David Peterson will be available out of the bullpen beginning Sunday and Sean Manaea will take Peterson’s rotation spot either as a traditional starter or as a bulk reliever after an opener.
  • Manager Carlos Mendoza and president David Stearns described the move as fluid and performance-dependent, meaning roles could change again based on results and matchup needs.
  • Manaea has shown a recent uptick in velocity and form, producing a 3.09 ERA in roughly 11.2 innings since May 10 and raising his four-seam fastball velocity into the low 91 mph range.
  • Peterson’s numbers this season show a stark starter-versus-reliever split, with a high ERA and opponents’ average as a starter compared with a much stronger 2.25 ERA and lower opponents’ average in relief, which the team cited in the decision.
  • The move responds to a strained rotation hampered by injuries and uncertainty about depth; Kodai Senga is on rehab assignments, Clay Holmes remains sidelined, and Jonah Tong is being considered for starts or bulk relief depending on matchups and bullpen health.