![Rio 2016: Wayde van Niekerk smashes Michael Johnson's 400m world record to clinch gold | Olympics 2016 | Sport | Express.co.uk Rio 2016: Wayde van Niekerk smashes Michael Johnson's 400m world record to clinch gold | Olympics 2016 | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/83/590x/Wayde-van-Niekerk-699996.jpg)
Rio 2016: Wayde van Niekerk smashes Michael Johnson's 400m world record to clinch gold | Olympics 2016 | Sport | Express.co.uk
![RIO DE JANEIRO, BRAZIL - AUGUST 14: Wayde van Niekerk of South Africa in front of the board showing his new world record in the mens 400m (43.03 seconds) during the evening RIO DE JANEIRO, BRAZIL - AUGUST 14: Wayde van Niekerk of South Africa in front of the board showing his new world record in the mens 400m (43.03 seconds) during the evening](https://c8.alamy.com/comp/GJDM0K/rio-de-janeiro-brazil-august-14-wayde-van-niekerk-of-south-africa-GJDM0K.jpg)
RIO DE JANEIRO, BRAZIL - AUGUST 14: Wayde van Niekerk of South Africa in front of the board showing his new world record in the mens 400m (43.03 seconds) during the evening
![South Africa's Wayde Van Niekerk competes and wins the Gold Medal in Men's 400m breaking a new World record during the Olympic Games RIO 2016, Athletics, on August 14, 2016, in Rio, South Africa's Wayde Van Niekerk competes and wins the Gold Medal in Men's 400m breaking a new World record during the Olympic Games RIO 2016, Athletics, on August 14, 2016, in Rio,](https://c8.alamy.com/comp/2F21BPT/south-africas-wayde-van-niekerk-competes-and-wins-the-gold-medal-in-mens-400m-breaking-a-new-world-record-during-the-olympic-games-rio-2016-athletics-on-august-14-2016-in-rio-brazil-photo-jean-marie-hervio-kmsp-dppi-2F21BPT.jpg)