Joe spent two collegiate seasons at Arkansas, in his home state, where he saw action in 60 games (59 starts), notching 15.2 points, 3.4 rebounds and 1.7 assists in 33.1 minutes per contest. Last season, Joe led the SEC with 3.6 threes per game, finishing with the fourth-highest average in the nation. Joe set an SEC freshman record with 113 three-pointers in his first season at Arkansas and was selected to the 2018-19 SEC All-Freshman Team.