Colby Gay hails from Milton, Vermont, joined the UD staff in July of 2020 after most recently coaching at the Nordic Soccer Club in Essex, Vermont. There he coached the Nordic 2007 Premier boys, who were ranked #1 in Vermont by GotSoccer.
During his first season as the Spartans graduate assistant coach, UD would go 6-1-1 in the abbreviated spring 2021 season to claim the American Rivers Conference Championship after COVID-19 pushed the season to the spring. The UD coaching staff would earn American Rivers Conference Staff of the Year, United Soccer Coaches DIII North Region Staff of the Year, and United Soccer Coaches DIII Men's National Staff of the Year.
Gay was a part of the Castleton University soccer team from 2016-2019, where he was a captain and four-year starter at midfield. At Castleton, he played in 70 games, recording eight goals and nine assists.
He also has coaching experience at Camp Winadu and the Summit Football Club. At Camp Winadu, he instructed 400-500 athletes for a seven-week program that fostered an individual's technical, physical and tactical abilities. For the Summit Football Club, Gay served as a volunteer coach from 2016-2020, helping lead and coach the club's technical academy, which focuses on developing player's ball control and technique.