Wayde van Niekerk broke another Michael Johnson record, running the fastest-ever 300m in Ostrava, Czech Republic, on Wednesday.
Van Niekerk, who broke Johnson’s 400m world record of 43.18 in Rio with a 43.03, ran 30.81 seconds in Ostrava.
Johnson’s previous world best in the rarely contested event was 30.85, clocked at altitude in Pretoria in 2000, his final season.
Van Niekerk previously ran 31.03 over 300m in Kingston, Jamaica, last year. At the time, only Johnson and Usain Bolt (30.97 in 2010, also in Ostrava) had run faster in the non-Olympic event.