And the 74-year-old coach behind his golden run at Rio 2016.
South Africa's Wayde van Niekerk sensationally won the Olympic 400-meter gold at Rio 2016 -- smashing Michael Johnson's 17-year-old record along the way -- and he has his coach Anna Botha to thank.
The coach's philosophy is all about discipline and hard work, albeit leavened by laughter.
http://edition.cnn.com/2016/08/15/sport/news-rio-olympics-van-niekerk-grandma-coach/
