Baker originally chose the Gamecocks in August but did not sign a letter of intent in November. He also had interest from Ole Miss, Seton Hall and Memphis, Boston College and Miami (Fla.).
Baker joins a class ranked No. 8 on ESPN.com and features ESPNU 100 prospects Ricardo Ledo (Providence, R.I./South Kent School) and Kris Dunn (New London, Conn./New London H.S.) along with Josh Fortune (Hampton, Va./Kecoughtan H.S.).