Regarded as one of the greatest scrum-halves of all time, Joost van der Westhuizen played for South Africa in 89 Test matches scoring 38 tries.
He played in his first of three World Cups in 1995 when the Springboks beat New Zealand in the final, and won the Tri-Nations Championship in 1998.
In 2011 van der Westhuizen was diagnosed with Amyotrophic Lateral Sclerosis, a form of motor neurone disease and was given between two and five years to live.
A recent fundraising match saw a team of "Joost van der Westhuizen World Legends" face a "Matt Hampson England Legends XV" at Allianz Park, the home of Saracens.
Hampson was left paralysed from the neck down 10 years ago when a scrum collapsed in a training session with the England Under-21 squad
Former players to appear at the match included England's World Cup winners Jonny Wilkinson and Jason Robinson, and the former France back-rower Serge Betsen.
Conversation is hard work for Van der Westhuizen and his slurred speech is interpreted by his younger brother Pieter. His now small body frame contradicts the powerful, fearless player he once was.
But the way he has faced the debilitating condition demonstrates that his courage has not diminished.