Serena Williams motivated by Arthur Ashe

World number one Serena Williams reveals how she was motivated by Arthur Ashe from an early age.

In 1975 Ashe became the first black player to win Wimbledon, and won several other Grand Slams in a stellar career.

Williams insists that Ashe's story not only influenced other black sportsmen and women, but had an affect across society.

Watch Arthur Ashe - More Than a Champion on BBC Two on Friday 26 June, from 21:00 BST.