Francis shocks Felix, Miller-Uibo for world 400m gold

American Phyllis Francis ripped up the form book to claim a shock gold in the women's 400m at the IAAF World Championships on Wednesday.

Phyllis Francis with a personal best of 49.92 seconds.   -  Getty Images

American Phyllis Francis ripped up the form book to claim a shock gold in the women's 400m at the IAAF World Championships on Wednesday.

The race had been billed as a straight duel between multi-medalled American Allyson Felix, the defending champion, and Olympic champion Shaunae Miller-Uibo.

But clear leader Miller-Uibo tied up in shocking fashion with 20 metres to run to allow hard-charging Francis, 25, win with a personal best of 49.92 seconds.

Bahrain teenager Salwa Eid Naser claimed silver in a national record of 50.06, with Felix taking bronze, just 0.02sec adrift, as Miller-Uibo went from first to fourth in the final strides.

Golden Gong finally wins women's shot

China's Gong Lijiao made the most of the absence of reigning champion Christina Schwanitz and four-time champion Valerie Adams to win gold in the women's shot put.

After claiming six major silver or bronze medals since the 2008 Olympic Games, the 28-year-old Chinese athlete managed a best of 19.94 metres for her country's first gold medal of the champs.

In difficult conditions under pouring rain at the London Stadium, Hungary's Anita Marton claimed silver with 19.49, while American Olympic champion Michelle Carter took bronze (19.14).