Springboks captain Siya Kolisi leaves Stormers for Sharks Siya Kolisi is the Springboks' first black captain, and led the side to the 2019 Rugby World Cup title. Ashley Vlotman/Gallo Images/Getty Images The Springboks' World Cup-winning captain Siya Kolisi has ended his 11-year stay with South Africa's Stormers and is expected to be unveiled by the Durban-based Sharks in the coming week. The move has long been rumoured, with Western Province Rugby confirming on Sunday they had released Kolisi early from his contract, which was due to expire at the end of October, having accepted a transfer fee from an unnamed team.