Wayde van Niekerk breaks world record to win Olympic gold
South Africa's Wayde van Niekerk broke Michael Johnson's 17-year-old 400m world record to sensationally win Olympic gold at Rio 2016. The 24-year-old finished in 43.03 seconds, 0.15 quicker than the time Johnson clocked in Seville in 1999. Grenada's Kirani James, the London 2012 champion, finished 0.73...