How to Serve an Ace with Tim Henman

British tennis legend Tim Henman gives his top tips for perfecting the serve. He is playing on grass in Paris and takes some time out to give some handy hints for mastering the tennis ace. HSBC NOW brings you stories from our colleagues around the world. For more videos, and to stay up to date with HSBC NOW, subscribe to the channel. Twitter: http://www.twitter.com/HSBC_NOW