Left arm spinner Aaron Phangiso (2-29) was the difference as South Africa fought back superbly with the ball to restrict New Zealand to 151.
Hashim Amla then struck a controlled 48 to lead South Africa to a six-wicket win. South Africa 152 for 4 (Amla 48, Rossouw 38) beat New Zealand 151 for 8 (Williamson 42, Guptill 42, Phangiso 2-29, Wiese 2-24) by six wickets.
Matches Tagged in ClipDex2015 RSA v NZL 1st T20
Series Tagged in ClipDex2015 RSA v NZL T20 Series
Players Tagged in ClipDexRossouw, Rilee R Amla, Hashim M de Villiers, Abraham B Williamson, Kane S Guptill, Martin Phangiso, Aaron Mpho Morkel, Morne
Grounds Tagged in ClipDexKingsmead
Categories Tagged in ClipDexLimited Overs (ODI & T20)