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Who challenges umps best? MLB rule change makes playoff debut

The system lets hitters challenge balls and strikes, and managers say it could change late-inning strategy.

  • With the start of the playoffs, MLB's Automated Ball-Strike challenge system enters its 'true test' during high-stakes postseason games where every pitch's accuracy carries significant weight.
  • Cleveland Guardians manager Stephen Vogt credited his team's collaborative approach for their improved challenge success during the regular season. Players and coaches have 'worked hard at it' to build a formula for identifying high-leverage opportunities.
  • Hitters successfully overturned 49% of their 4,666 challenge attempts through September 23. Philadelphia Phillies catcher J.T. Realmuto manages challenge rates officials deem 'reasonable' under the new rules.
  • Managers now prioritize using challenges in critical late-inning situations rather than early in games. Vogt noted his staff evaluates call accuracy before triggering reviews to avoid exhausting limited opportunities too early.
  • The grand one-year lab experiment has ended and the true test begins with the playoffs. League officials will analyze postseason data to determine if the ABS technology permanently reshapes umpire-player interactions.
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Waterloo Cedar Falls CourierWaterloo Cedar Falls Courier
+27 Reposted by 27 other sources
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Who challenges umps best? MLB rule change makes playoff debut

It has spawned accountability meetings. Forced managers to take players “offline.” And others to figuratively kick their players in the butt and tell them to tap their helmets more.

·Waterloo, United States
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USA Today broke the news in New York, United States on Friday, September 25, 2026.
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