Career
His is a utility back that can play as a fullback, winger or centre. Youth Viljoen were noticed at primary school level, when he was selected in the Free State squad for the Under-13 Craven Week tournament in 2008. He then went to Grey College in Bloemfontein, where he was called up to a number of youth tournaments.
He played at the Under-16 Grant Khomo Week in 2011, where he scored 18 points in two matches against Western Province and the Falcons.
In 2012, he was included in the Free State"s Under-18 Craven Week squad, scoring a try against KwaZulu-Natal and he played in the competition again in 2013, this time contributing a brace in their match against the Pumas. This led to Viljoen"s inclusion in the South African Schools side for the 2013 international series, where he started two matches to help the South African side to victories over England and France.
At the end of 2013, he moved to Cape Town to join Western Province. He was one of the Western Province Rugby Institute players that were invited to form part of the Stormers wider training group prior to the 2014 Super Rugby season.
A knee injury ruled him out for part of the season, but he returned to action for the Western Province U21 side during the 2014 Under-21 Provincial Championship, scoring five tries in five appearances, including a brace against the Leopards U21.
Western Province He was included in the senior squad for the first time for the final match of the round-robin stage of the 2014 Premier Division, being named in the starting line-up for their match against the Natal Sharks. South Africa Under-20 In March 2015, Viljoen was named in an extended South Africa Under-20 training group as part of their preparation for the 2015 World Rugby Under 20 Championship. He didn"t feature in a friendly match against a Varsity Cup Dream Team or their two-match tour of Argentina, but was included in the final squad for the 2015 World Rugby Under 20 Championship.
Viljoen was also a cricketer at school and was called up to various Free State youth cricket teams.