Photos: World Athletics Championships Beijing Day 4

Images of World Athletics Championships Beijing day 4 - Tuesday, August 25

Rudisha in lead during the men's 800m final

Here are men's 800m winners

Genzebe Dibaba on her way to her 1st world outdoor gold medal in the women's 1500m

Dibaba wins women's 1500m gold

Nicholas Bett of Kenya in lane 9 on his way to 400m hurdles victory

Nicholas Bett celebrates his shocking 400m hurdle gold - he is the first Kenyan to win gold under 800m event

Women's discus throw champion Denia Caballero of Cuba in action

Natsha Hastings of the United States in blocks before women's 400m semi final

This is your men's long jump world champion - Greg Rutherford of Great Britain

Kafetien Gomis of France in action in the men's long jump final

Usain Bolt thanks everyone after winning his 200m heat