As a freshman at Oakland, Maddox averaged 6.7 points and 2.4 rebounds per game. He had a better season as a sophomore, putting up 9.0 points, 3.0 rebounds, and 2.2 assists during the 2019–20 season.[3] He transferred to Cal State Fullerton for his junior year.[citation needed]
During his first year at CSU Fullerton, he averaged 15.9 points and made Second Team All-Big West Conference in the COVID shortened season. In 2021-22 for the Titans, Maddox averaged 9.5 points, 2.6 rebounds, 1.9 assists and 1.1 steals, helping CSUF win the Big West and reach March Madness for the first time since 2018.[4] He transferred closer to his hometown to play at Western Michigan, using his final year of eligibility to play for the Broncos.[5]
As a senior for the Broncos, Maddox 12.5 points and 3.8 rebounds in 25 games, starting 18 at shooting guard. He put up his collegiate career high against Miami, putting up 25 versus the Hurricanes. He also put up 22 on Senior Night against Central Michigan, including 6 three-pointers.[6]