Van Der Westhuizen became a referee on the
IRB Sevens World Series circuit, where he very quickly established himself as one of the top referees, being the man in charge of the
2013 Hong Kong Sevens final in just his third tournament. He was also named on the refereeing panel for
Moscow's
2013 Rugby World Cup Sevens. Further appointments in
Varsity Rugby followed in 2013 (which included refereeing the 2013 Varsity Cup final between and ), and there were four more
Vodacom Cup appearances. He officiated three matches in the
2013 Currie Cup First Division before his first
Premier Division appointment for the match between the and in
Johannesburg, his first of five matches in the competition. Van Der Westhuizen was named on
SANZAR's referee list for the
2014 Super Rugby season and was in charge of his first
Super Rugby match when the met the in Johannesburg. Van Der Westhuizen also officiated at the
2014 Commonwealth Games in
Glasgow. and at the
2014 IRB Junior World Championship, taking charge of three matches, including the 5th-place play-off semi-final between
Australia and
Samoa, Van der Westhuizen refereed at the
2015 Tbilisi Cup to become the 69th test referee for South Africa. ==References==