Major League Baseball umpire CB Bucknor had six of his calls overturned during Saturday’s game between the Boston Red Sox and Cincinnati Reds, as the league’s Automated Ball-Strike (ABS) system was used to challenge several decisions.

According to reports, eight calls were challenged during the game, with six ultimately reversed by the ABS. The overturned rulings came in key moments, including back-to-back strike three calls in the sixth inning that were successfully challenged by Reds third baseman Eugenio Suárez.

Boston pitcher Ryan Watson, who was on the mound during the sequence, described the atmosphere as intense following the reversals. He noted the crowd reaction grew significantly louder after each overturned call, adding to the pressure during the inning.

While several of the pitches were close, the ABS determined they fell outside the strike zone. The technology, which is being implemented to assist with ball-and-strike accuracy, allows players to challenge umpire decisions in real time.

Tensions later escalated in the eighth inning when Red Sox manager Alex Cora argued a separate call involving a check swing by Trevor Story. Cora criticized the performance after the game but acknowledged the difficulty of umpiring at the professional level.

The game itself remained competitive throughout. Boston tied the score in the ninth inning to force extra innings, but Cincinnati secured a 6-5 victory in the 11th on a walk-off single by center fielder Dane Myers.

The incident highlights the growing role of technology in MLB officiating, as the league continues to evaluate the impact of automated systems on game management and accuracy.