As part of a special series, BBC Sport (Great Britain) is currently showing an online coaching video for Wheelchair Tennis staring Esther Vergeer of the Netherlands. Vergeer is a four-time Paralympic gold medallist and International Tennis Federation (ITF) World Number One for five years straight.

The video provides hints and tips for Wheelchair Tennis players, including advice on how to improve your movement, your shots and your serve.

It is part of a master class series on BBC Sport’s Tennis page, presented by some of the world’s best Tennis players. The video can be viewed on the BBC Sport website at http://news.bbc.co.uk/sport1/hi/tennis/skills/default.stm.

Esther Vergeer (NED), Photo: Lieven Coudenys