Anthony Joshua vs. Gary Cornish, billed as Heavy Duty, was a heavyweight professional boxing match contested between undefeated WBC International champion Anthony Joshua, and undefeated IBO Inter-Continental champion Gary Cornish, with Joshua's WBC International, and the vacant Commonwealth titles on the line. The bout took place on 12 September 2015 at The O2 Arena in London, England. Joshua defeated Cornish, adding the Commonwealth title to his WBC International title via first-round technical knockout (TKO).