Friends, family and fans are gathering to pay tribute to rugby legend Joost van der Westhuizen at his memorial service in Pretoria.

Van der Westhuizen‚ the former Bulls and Springbok scrumhalf‚ died in a Johannesburg hospital on Monday following a six-year battle against amyotrophic lateral sclerosis‚ a form of motor neuron disease (MND). He was 45.