Check out these photos from Daniel Dubois' fifth-round knockout of Anthony Joshua in their IBF heavyweight title fight at Wembley Stadium in London. (Photos by Getty Images)

A major upset saw Anthony Joshua miss out on the chance to become three-time world heavyweight champion on Saturday night, as he was knocked out by British rival Daniel Dubois in the fifth round.

Daniel Dubois has retained the IBF heavyweight title by knocking out former two-time world champion Anthony Joshua in the fifth round in a dominant first defense of his belt.