Usain Bolt gave further evidence if any was needed of his superlative form ahead of the world championships with an outstanding victory over 100 meters in the London Grand Prix on Friday night. The Jamaican superstar ran a blistering 9.91 seconds into a strong 1.7 meter headwind to leave a world class field, including arch-Jamaica rival Asafa Powell trailing. Compatriot Yohan Blake finished second in 10.11 seconds with Antigua’s Daniel Bailey third.
