World Cup winner Joost van der Westhuizen has died after a long battle with motor neurone disease at the age of 45. The former South Africa scrum-half was diagnosed with the condition in 2011 and was admitted to a Johannesburg hospital on Saturday morning. Van der Westhuizen became one of rugby’s greatest scrum-halves in a 10-year Springboks career which began in 1993 and spanned 89 caps.