Pat Hoberg umpired his first major league game at the start of the 2014 season. He was still officially a member of the Pacific Coast League umpires' roster at the time, but has been working almost full-time in the majors since making his debut. In 2017, he was one of four umpires added to the full-time major league staff.
He attended the Jim Evans Academy of Professional Umpiring in 2009 and began his professional career in the Arizona League that season. He later worked games in the Appalachian League, Florida State League and Texas League before earning a promotion to the PCL. In a high-profile assignment, he worked the 2013 Futures Game.
As one of the few major league umpires from Iowa, he was selected to be the home plate umpire for the "Field of Dreams Game", the first major league game to be played in Iowa, on August 12, 2021. As the home plate umpire in Game 2 of the 2022 World Series, he received a perfect grade on judging balls and strikes - not missing a single call! He had been the highest rated umpire in terms of such calls during the regular season, so his performance was not really a surprise. He worked the 2023 World Baseball Classic.