Terrell joined Waterloo Regional Boxing Academy in 2009. He trained for 1 year in the recreational class before he stepped in the ring and competed. In his boxing career, he has won gold in the Ontario Provincial Championship 4 times. He has competed at the Canadian National Championship 3 times and won a gold medal once. After his last National tournament, he decided to hang up the gloves in order to focus on his education and also teach the new generation of athletes. He currently attends University studying engineering, but he continues to volunteer in the gym whenever he can.