Wiaan Mulder batted to his best of his ability and he scored up to 367 in just 334 balls, he is playing like ODI. So far, it is looking like South Africa to win the game one-sidedly and maybe they will not bat again according to current conditions, because now Zimbabwe can't even come to lead even in their dreams.
One thing I didn't understand was how a player missed such a big opportunity, where adding just 33 runs would have set a new record in Test cricket history. Here, he voluntarily gave up batting and invited Zimbabwe to bat. Various news outlets have reported that Wiaan Mulder did not want to break cricket legend Brian Lara's record on his own, and he has also said that he would do it even if he had the opportunity a hundred more times. However, this is a personal matter for him, but it is rare in cricket to see someone who is so close to a record and then vows not to break it.