The former rugby national team captain lost his battle to motor neuron disease on Monday.
Van der Westhuizen, who was diagnosed with the illness in 2011, has been described as an inspiration.
Sky News described him as one of the greatest scrum-halfs in rugby history.
The BBC spoke to Wales coach Rob Howley, who called him a "world class nine", while England coach Eddie Jones remembered him as an outstanding player and a great sniper.
Many have focused on van der Westhuizen's talent on the field and his dignity off the field.
Sky News described him as one of the greatest scrum-halfs in rugby history.
The BBC spoke to Wales coach Rob Howley, who called him a "world class nine", while England coach Eddie Jones remembered him as an outstanding player and a great sniper.
Many have focused on van der Westhuizen's talent on the field and his dignity off the field.
