Blue Jays are already seeing the benefit of ABS system after one week of spring games

"Each team gets two challenges per game. If a challenge is successful, the team retains it. The players who can initiate the challenge are the pitcher, catcher, or batter. After the pitch, the player will immediately tap their hat or helmet to request a challenge."

"The Toronto Blue Jays have initiated 27 challenges so far through (12 on offense and 15 on defense). They've been successful overall in 48 percent of the appeals, but the defense has been more successful in their challenges (60 percent)."

"On defense, Tommy Nance has shown a knack for recognizing the strike zone, winning all three of his challenges. Two of his overturns changed the pitch to a strikeout pitch."

The Automated Ball-Strike (ABS) umpiring system begins regular-season use in Major League Baseball after testing in minor leagues since 2019 and Spring Training implementation last season. Each team receives two challenges per game, initiated by pitcher, catcher, or batter through a hat tap. The Toronto Blue Jays have filed 27 challenges with 48 percent success overall, though defense challenges succeed at 60 percent. Notable performers include Tommy Nance with perfect challenge success and catcher Alejandro Kirk, ranked 98th percentile in pitch framing, though his appeal performance remains moderate at 60 percent.

Read at Jays Journal