- Height 5' 9", Weight 180 lb.
- High School Emerald Ridge High School
Quinn Wolcott became an umpire in the 2006 Northwest League and moved up to the Midwest League and Carolina League in 2007. He spent two years as the youngest umpire in the Southern League. In 2011-2012, he worked in the Pacific Coast League. In 2012, he also worked in MLB spring training and in the 2013 World Baseball Classic Qualifiers. He umpired his first major league game during the 2013 season, then in 2014 was added to the full-time major league staff when Gary Darling retired in mid-season. He was appointed to the crew headed by Gerry Davis.
He worked Pool D games in the 2017 World Baseball Classic. On September 13, 2017, he was behind the plate when the Cleveland Indians hosted the Detroit Tigers with a chance to set a new American League record with 21 straight wins. In the 3rd inning, he ejected both Tigers catcher James McCann and manager Brad Ausmus when they complained too much about a ball four call. A batter later, new catcher John Hicks completely missed a pitch from Buck Farmer that hit Wolcott straight on the left shoulder, knocking him backwards to the ground. Given the circumstances, many observers thought that the pitch was intentional, but Ausmus vehemently denied this, claiming that Hicks had simply got crossed up. In any case, the Commissioner's office decided to investigate the matter. He worked the 2023 World Baseball Classic.