Career
He made his MLB debut on September 29, 2010. His uniform number is 98. Conroy was officially promoted to the full-time staff of MLB umpires on June 14, 2013, replacing Brian Runge.
At the time of his appointment, Conroy had worked 165 games at the Major League level
Conroy was the first base umpire on August 24, 2012, when Adrián Beltré of the Texas Rangers hit for the cycle against the Minnesota Twins. He was the first base umpire on September 28, 2012, when Homer Bailey of the Cincinnati Reds no-hit the Pittsburgh Pirates.
Conroy served as one of three MLB umpire representatives for the November 2014 MLB Japan All-Star Series. On September 3, 2015 in a game between the Los Angeles Dodgers and San Diego Padres, Conroy failed to invoke the neighborhood play, ruling Justin Upton safe at second in the sixth inning and subsequently drew the ire of Dodgers manager Don Mattingly.