Michael William Muchlinski (/mʊˈlɪnskiː/; born February 26, 1977) is an American Major League Baseball umpire.

He umpired his first Major League game on April 24, 2006, and was officially hired by MLB prior to the 2014 season.

[1][2] Muchlinski officiated behind the plate on August 5, 2011, for a benches-clearing brawl between the Philadelphia Phillies and the San Francisco Giants.

[3] Muchlinski was the first base umpire on June 13, 2012, when Giants pitcher Matt Cain threw a perfect game against the Houston Astros.

[4] Muchlinski was the home plate umpire on June 20, 2015, when Washington Nationals pitcher Max Scherzer pitched a no-hitter against the Pittsburgh Pirates.