McDine made his World Championship debut at the 2009 tournament facing Alex Roy in the first round. McDine beat Roy by three sets to one to advance to the second round where he faced qualifier Dennis Smith, who defeated fifth seed Terry Jenkins in the first round. McDine came into the match with a hand injury sustained while cooking Christmas dinner, but managed to take a 3 sets to nil lead before Smith fought back to 3 sets all and eventually beat McDine 4–3.