MLB umpire caught on hot mic begging pitch to 'please be a strike' after catcher issues ABS challenge

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Major League Baseball's Automated Ball-Strike System (ABS) had arguably its best moment on Saturday afternoon in spring training.

In a game between the Cleveland Guardians and San Francisco Giants in Scottsdale, Arizona, Robbie Ray was facing Sean Mooney, who was at the plate as the tying run in a 3-0 game and an 0-2 count with two outs in the top of the fourth.

Mooney took a low sinker that was called a ball by home plate umpire Bill Miller, but catcher Patrick Bailey challenged the call. 

Only a batter, catcher or pitcher can challenge calls, and the challenge must be almost immediate. Each team gets two and retains correct challenges.

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MLB umpire Bill Miller during the first inning of a game between the Baltimore Orioles and the Atlanta Braves at Oriole Park at Camden Yards.  (Reggie Hildred/USA Today Sports)

Miller announced to the crowd that the Giants were challenging the call to get out of the inning, but he accidentally left his mic on, providing a hilarious misstep.

"Please be a strike," Miller said, before quickly realizing that everyone had just heard him. Bailey, too, had a pretty hysterical reaction.

Miller was actually rooting for his call to be wrong, but it was over 100 degrees in Scottsdale, so maybe Miller wanted to simply cool down.

MLB umpire Bill Miller during a New York Mets game against the Arizona Diamondbacks at Chase Field.  (Mark J. Rebilas/USA Today Sports)

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Miller did not get his wish. His call was correct by three-tenths of an inch. Two pitches