American Phyllis Francis won the World Championships 400 meters final as Olympic Champion Shaunae Miller-Uibo stumbled when seemingly certain of victory and dropped to fifth place.

Francis looked out of it with 80 meters to go but maintained her form amid the carnage to post a personal best time of 49.92 seconds and take a shock gold medal.

Bahrain's Salwa Eid Naser claimed a brilliant silver in 50.06 as defending champion Allyson Felix of the united states faded to get bronze in 50.08.
Norway's Karsten Warholm announced himself as one of athletics' brightest new talents as he recorded a magnificent gun-to-line triumph to lift the world 400 meters hurdles title.

The 21-year-old former multi-eventer demonstrated all the strength he has acquired from competing as an all-rounder as he led from the first hurdle and was powerful enough to hold off his pursuers on the home straight to win in 48.35 seconds.
China's Gong Lijiao ended her long wait for a global outdoor title when she won the shot put gold medal, utterly dominating the competition.

Gong made of light of the wet conditions as she broke 19 metres with five of her six attempts and won with a fifth throw of 19.94 metres.
Botswana's Isaac Makwala reached the 200 metres final against all the odds, qualifying from the notoriously difficult inside lane made even more difficult by wet conditions after gaining a reprieve from the IAAF.