In the 2022 offseason, the Denver Nuggets signed Collin Gillespie to a two-way contract after he went undrafted. A few weeks later, he underwent surgery after he fractured his leg during a pickup game at Villanova, where he went to college. Fast forward three years, and Gillespie is thriving, but not with the Nuggets.
He appeared in 24 games for Denver in the 2023-24 season after he returned from his leg injury, averaging 3.6 points, 0.9 rebounds, and 1.1 assists per game in 9.4 minutes. That summer, Gillespie signed a two-way deal with the Suns after putting up big numbers for Denver's G League affiliate.