Career
Results 2010 Defeated Ranil Jayathilakage (Sri Lanka) 5–0 Defeated Nathon McKwen (New Zealand) 9–2 Defeated Afaese Fata (Samoa) 7–2 Defeated Keiran Harding (Wales) 12–6 Defeated Anthony Ogogo (England) 16–4.
Results 2010 Defeated Ranil Jayathilakage (Sri Lanka) 5–0 Defeated Nathon McKwen (New Zealand) 9–2 Defeated Afaese Fata (Samoa) 7–2 Defeated Keiran Harding (Wales) 12–6 Defeated Anthony Ogogo (England) 16–4.
As captain of the Northern Irish team, O'Kane won the gold medal at the 2010 Commonwealth Games in the middleweight division. In May 2012, O'Kane won the Prizefighter 24: All-Irish Middleweights tournament, defeating Anthony Fitzgerald via split decision in the quarter-finals, Ryan Greene via first-round technical knockout in the semi-finals and JJ McDonagh via unanimous decision in the final.