New Zealand secured their first-ever Test series win against South Africa with a 2-0 series victory
Kane Williamson scored an unbeaten 133 in the second innings, becoming the quickest batter to reach 32 Test hundreds in just 172 innings.
Williamson surpasses Smith, Ponting, Tendulkar as fastest to 32 Test centuries milestone achiever.
Williamson equals Younis Khan's record with fifth fourth-innings century, sixth against South Africa.
Williamson scores seven centuries in last seven Tests, including twin hundreds in series opener.
Alongside Williamson, Will Young's unbeaten 60 played a crucial role in New Zealand's victory in the second Test.
New Zealand tops World Test Championship standings after series win, to face Australia next.