Joseph Parker 'hungry, driven' to face Dillian Whyte

Almost four months ago the New Zealand boxer Joseph Parker lost his world heavyweight title belt, beaten by English superstar Anthony Joshua in what was his first loss in 25 fights as a professional. On Sunday morning, Parker can take a big step to regaining that belt when he returns to the ring against Jamaican-born Brit Dillian Whyte in London. The only loss of Whyte's professional career also came against Joshua, and both he and Parker know a chance to avenge those defeats in a world title fight potentially awaits for this weekend's winner. Joseph Parker talks to Philippa Tolley.