Mostert, a South African rugby union international, plays for Honda Heat in Japan and has World Cup wins (2019, 2023).
South Africa has named a partially revamped XV for the Nations Championship clash with Wales in Durban, with four uncapped players in the squad and captain Pieter-Steph du Toit leading the side. Erasmus cites squad depth and a plan to give everyone a chance, while Wales aim to respond after a mixed campaign.