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MLB’s ABS Challenge Era Rewrites Strike-Zone Strategy

Catcher-led challenges now look like the clearest path to value.

Overview

  • MLB rolled out the Automated Ball-Strike challenge system for 2026, using Hawk-Eye cameras and a two-second player tap to contest calls with two team challenges that are kept on a win.
  • Most challenges now come on 2-2 or full counts late in games, and catchers lead the hit rate, highlighted by Yankees catcher Austin Wells starting 4-for-4 and Salvador Perez pacing MLB in overturns.
  • Pirates ace Paul Skenes said he has “totally flipped” to support ABS and plans to leave taps to his catcher, reflecting a wider shift toward catcher control of these calls.
  • The Twins set single-game marks with nine challenges and eight overturns, and manager Derek Shelton was ejected after a timing dispute over a rare pitcher-initiated tap.
  • Early results vary by club, from Orioles, Yankees and Royals near the top to Boston at 45.5% through six games and Texas losing on a walk-off reversal after conservative use.