South Africa enter the quarter-finals of the World Cup as the only team in the entire competition that have not been carded yet, and director of rugby Rassie Erasmus believes that is down to a conversation he had with former referee Nigel Owens last year. South Africa enter the quarter-finals of the World Cup as the only team in the entire competition that have not been carded yet, and director of rugby Rassie Erasmus believes that is down to a conversation he had with former referee Nigel Owens last year.