In the off-season prior to his senior year, Crumpton underwent a weight training regimen and lost 30 pounds, resulting in an ability to be more active and improve endurance.[3] The plan worked well, as at the close of the 2017–18 season, was named the MAAC co-Player of the Year with Niagara's Kahlil Dukes.[4] The duo were also named honorable mention All-Americans by the Associated Press.[5]
Crumpton signed his first professional deal with T71 Dudelange in Luxembourg’s Total League for the 2018–19 season.[6]