New York Yankees manager Aaron Boone criticized an umpire's pitch clock violation called on infielder Jose Caballero during the team's 5-4 victory over Atlanta on Saturday. Boone argued that Caballero was not given a warning before the violation was assessed, which he deemed "petty stuff" and "uncalled for."

Boone stated that home plate umpire Dan Merzel called the violation at approximately 11 seconds without a warning, which he believes is contrary to the rule's typical application. "You have to warn him," Boone said, adding that he had not received any new league memos that would alter this procedure.

Caballero has gained attention this season for strategically waiting until the 8-second mark before engaging with the pitcher. In a previous incident last month, he was called for a violation despite engaging before the 8-second limit, as umpires ruled he spent the final seconds looking down within the batter's box. Boone suggested that the interpretation of the pitch clock rules, particularly concerning Caballero, appeared to change again on Saturday.

Following the violation, an visibly upset Caballero slammed his equipment before proceeding to first base after drawing a walk. He was guided to the base by first base coach Dan Fiorito. Merzel subsequently called a pitch-clock violation on the next batter, Austin Wells.

Boone discussed the calls with Merzel and crew chief Dan Bellino after the inning. He reiterated that Caballero should have received a warning. Boone believes Caballero is no longer actively pushing the boundaries of the pitch clock rule and that the violation was unwarranted without a prior caution.

Caballero's approach to the pitch clock has previously led to confrontations. Last month, his manipulation of the timer contributed to benches clearing in a game against the Pittsburgh Pirates after pitcher Dennis Santana took exception. That incident resulted in a pitch being waved off during Caballero's at-bat.

In recent games, Caballero has struggled at the plate, going 5-for-29 with one double, two walks, and 10 strikeouts over a nine-game stretch. His playing time may also be affected by George Lombard Jr. establishing himself as the everyday shortstop.