Márquez worked his first MLB game on August 13, 1999, as the home plate umpire in the second game of a
doubleheader between the
Montreal Expos and
Colorado Rockies. He was the first Mexican-born umpire in major league history. Márquez was the third base umpire for the final
Montreal Expos home game on September 29, 2004. The
Florida Marlins defeated the Expos 9–1. On July 2, 2011, Márquez ejected both
Toronto Blue Jays manager
John Farrell and pitcher
Jon Rauch. In the top of the 9th inning, with the Blue Jays down a run,
Shane Victorino of the
Philadelphia Phillies singled, driving in
Chase Utley, who was called safe at home by Márquez; Rauch was ejected for arguing the call, and Farrell was ejected for unsportsmanlike conduct. This incident gained some notoriety because of the size of Rauch and his anger towards Márquez. Rauch, at a height of and weighing well over , had to be restrained by catcher
J. P. Arencibia, Farrell, and third base coach
Brian Butterfield. In the process, Rauch's jersey was ripped off and Farrell's jaw was dislocated by Rauch. Marquez was the umpire at third base for Miguel Cabrera's 3,000th career hit on April 23, 2022. Márquez was the first base umpire in a game on May 10, 2022, between the Toronto Blue Jays and New York Yankees, where Blue Jays pitcher
Yimi García, who was just came into the game, gave up a game-tying three-run home run to Yankees batter
Giancarlo Stanton in the bottom of the 6th. The next batter,
Josh Donaldson, was hit by the pitch on a 0-1 count which made members of the Yankees mad. After a discussion by Márquez and his crew, Márquez threw out García with no warning which confused and angered García and the Blue Jays dugout believing there was no intent. Márquez also threw out Blue Jays pitching coach
Pete Walker for arguing. But according to Blue Jays manager
Charlie Montoyo, who was thrown out the next inning for arguing a warning, he said that the reason they threw out Yimi García was because Donaldson and Blue Jays catcher
Tyler Heineman were exchanged words at each other about something a couple of innings before and believed they threw at Donaldson intentionally in a tie game after giving up a home run the next inning. Donaldson said that he and Heineman did exchange words and said the conversation was about baseball. Márquez said the exchange between Donaldson and Heineman “definitely played into it,” along with the game situation following Stanton's home run. There is no footage of the exchange between Heineman and Donaldson. On April 25, 2025, during a game between the New York Mets and the Washington Nationals, with runners on first and second and no outs, Marquez missed a call on a bounced line-drive to Nathaniel Lowe, calling it a caught ball and an out. This allowed the Nationals to throw to first and second, with Marquez calling both runners out and ending the inning in a 3-4-3 triple play call. Mets Manager Carlos Mendoza repeatedly asked Marquez to convene with the other umpires about the unchallengeable play, but Marquez refused. The Mets eventually lost the game by one run. The missed call resulted in many people calling for a rule change to allow infield hits to be reviewable, as well as leading to significant criticism of Marquez for his handling of the call. == See also ==