Blackmon was selected by the Greensboro Swarm with the 26th pick in the third round of the 2021 G League Draft.
Blackmon played five collegiate seasons for the Saint Francis Red Flash. In his final campaign, he averaged 18.8 points, 5.3 rebounds, 1.7 steals and 1.5 assists across 34.1 minutes per game. He also displayed a confident three-point stroke, connecting on 2.7 threes a game while shooting 41.2 percent from beyond the arc. The 6-foot-1 guard spent last season playing for Besiktas in the Basketball Super League.