It is not often that Usain Bolt is upstaged but on a balmy night in London the fastest man in the world played second fiddle to Laura Muir, a veterinary science student from the University of Glasgow, and Kendra Harrison, a god-fearing hurdler from Tennessee.

The 23-year-old Harrison produced the performance of the evening, obliterating a world-class field and the Bulgarian Yordanka Donkova’s 100m hurdles world record which had stood for 28 years. As she crossed the line, far clear of the field, the stadium clock said 12.57sec. To the human eye it appeared much quicker and it was sharply rounded down to 12.20sec – one hundredth of a second faster than Donkova. Incredibly, Harrison will not be at the Rio Olympics having finished sixth in the US trials this month, with only the top three qualifying. This, though, will be some compensation. Harrison said: “After not making the Olympic team, I wanted to show these girls what I have. You have one bad day but I knew I still had it in me.”

https://www.theguardian.com/sport/2016/jul/22/kendra-harrison-anniversary-games-usain-bolt