Rivalry of England's squash stars

English squash duo Nick Matthew and James Willstrop are among the lead contenders for singles success at the Men's World Championships in Manchester 26 October - 3 November.

However, the pair - who have exchanged the world number one ranking several times during the last few years - have a far from harmonious relationship and share a rivalry which has been described as comparable to that of Lord Sebastian Coe and Steve Ovett in the 1980s.

Willstrop, 30, is desperate to end a 15-game losing streak against Matthew, 33, who has won two previous world championship titles. They tell BBC Sport's Nick Hope about how their rivalry has inspired their respective success.