Kendra Harrison sets 100m hurdles world record at Anniversary Games

• American beats Jessica Ennis-Hill to break record set in 1988 with 12.20sec
• Usain Bolt wins men’s 200m in 19.90secIt 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