De Grandhomme fifty sets NZ up with 175 lead
Tea New Zealand 489 (Williamson 176, Raval 88, de Grandhomme , Morkel 4-100, Rabada 4-122) lead South Africa 314 by 175 runsLive scorecard and ball-by-ball details Colin de Grandhomme struck his maiden Test fifty as New Zealand put on a total of 489 in 162.1 overs © Getty Images Colin de Grandhomme injected much needed aggression into the fourth day in Hamilton, making his maiden half-century in Tests and hiking…