Ryan Oosthuizen  Ryan Oosthuizen (born ) is a South African rugby union player, currently playing with the South Africa Sevens team in the World Rugby Sevens Series. His regular position is forward. He made his debut for the South Africa Sevens team at the 2017 Hong Kong Sevens  and was also a member of the South Africa Sevens team that won the 2016–17 World Rugby Sevens Series.