Kane Williamson has joined Martin Crowe as New Zealand's highest test centurymaker.
The New Zealand skipper completed his 17th test century against South Africa at Seddon Park today.
It was his third hundred against the South Africans, and second in this series.
He got to his century with an on drive to the boundary off part timer Dean Elgar.
It had taken him 207 minutes and 151 balls, and was chanceless.