Career
He can play as a loosehead or tighthead property Blue Bulls / TUT Vikings After finishing high school in 2009, Van der Westhuizen joined the Blue Bulls Academy. He represented the Blue Bulls U19 side in the 2010 Under-19 Provincial Championship, scoring one try in their match against the Leopards U19s to help them finish second on the log.
They reached the final of the competition in Durban, where Van der Westhuizen was an unused replacement in their 20–26 defeat to Western Province U21.
In 2011, he started the season representing the TUT Vikings in the 2011 Varsity Cup competition, making four appearances. He was also included in the Blue Bulls squad for the 2011 Vodacom Cup and he made his first class debut on 8 April 2011, starting their 34–8 victory over the Border Bulldogs in East London.
He made his first home appearance a week later when he came on as a late replacement in their match against the SWD Eagles. In the second half of 2011, he made a single appearance for eventual champions the Blue Bulls U21s during the 2011 Under-21 Provincial Championship.
He played in all seven of the TUT Vikings" matches during the 2012 Varsity Cup, but saw his side relegated after losing all their matches.
Golden Lions / Falcons In the second half of 2012, he crossed the Jukskei River to join Johannesburg-based side the Golden Lions. He made five appearances from the bench for the Golden Lions U21s during the 2012 Under-21 Provincial Championship before joining their near-neighbours, Kempton Park-based side the Falcons. He made his debut in the First Division of the on 17 August 2012 when he came on as an early substitute in the Falcons" match against the Griffons in Welkom.
He made a further two starts for the Falcons as they finished in seventh place on the log.
He was named in the Falcons squad for the 2013 Vodacom Cup competition, but failed to get any game time. He did return to action during the 2013 First Division, starting seven of their matches and playing off the bench on three occasions.
The Falcons finished last on the log after winning just two out of their fourteen matches. He represented the Falcons in the Vodacom Cup competition for the first time in 2014, making four appearances.
Van der Westhuizen started all five of their matches in the First Division regular season to help them finish in fourth spot to qualify for the semi-finals.
He also started their semi-final, helping the Falcons cause an upset by beating the log leaders Leopards in Potchefstroom and advance to the final. However, he missed out on the final, where the Falcons lost 21–23 to the Griffons in Welkom.