 In his sophomore year, Aminu's role increased slightly, in which he played 18 games, averaging 5.4 points and 3.2 rebounds per game, shooting 58.3% from the floor (his best shooting percentage during his college career).In his senior year, he averaged 11.8 points, 7.9 rebounds and 1.1 steals per game, shooting 52.2% from the floor.After going undrafted in the 2009 NBA draft, Aminu joined the Washington Wizards for the 2009 NBA Summer League.