South Africa have always been known for producing world-class fast bowlers. From the likes of Shaun Pollock, Allan Donald, Makhaya Ntini and Dale Steyn to the current bunch of speedsters like Kagiso Rabada, Anrich Nortje and Marco Jansen, pace has been South Africa's chief weapon over the years. Keshav Maharaj and Simon Harmer seem to be changing that script.