Kendra Harrison of the United States, who broke the 28-year-old world 100 metres hurdles record of 12.21sec in London last month with a time of 12.20 after failing to qualify in the US Olympic Track and Field trials, offered evidence of what Rio missed tonight as she defeated a strong field in 12.42 at the International Association of Athletics Federations (IAAF) Diamond League meeting in Lausanne.

Genzebe Dibaba produced a stupendous breakthrough in the women’s mile here tonight as she clocked 4 min 13.31 sec to smash the 26-year-old record of 4:17.14 set by Romania’s Doina Melinte and finish less than a second away from the outdoor world mile record of 4:12.56 set by Russia’s Svetlana Masterkova in 1996.