Muhammad Ali and George Foreman are two of the greatest heavyweights in boxing history, having shared the ring in one of the most memorable bouts of all time.

Derek Chisora has always been unpredictable. Volatile and, at times, violent too. But one thing the 41-year-old heavyweight ...

Notorious heavyweight talks to Telegraph Sport about his reluctance to retire – and why he is friends with Nigel Farage and ...