In the men's side, David Saruni, who was motivated by 2016 Rio Olympic silver medalist Boniface Mucheru and World Champion Nicholas Bett to race in the 400m hurdles, is also eying the coveted world title too.

Saruni's main focus will be to put his best foot forward during the 400m hurdles heats on day two of the competition in the afternoon.

"Bett and Mucheru are a revolution to us. We never imagined a Kenyan ruling the sprint races. They have done it and we have just to take cue and do it," he said.

"We did not know much about the blocks and the hurdles techniques but now we know enough to be world beaters."

A total of 131 teams bringing in over 2,000 athletes will be competing in Nairobi for the five-day event, which is the last before IAAF shifts to continental championships.

Kenya, who won the overall title in Poland and Italy, want to win the third crown at home to crown off a successful performance at the championships.

Seven countries have pulled out including defending champions United States, Japan, Switzerland, Britain, Canada, Australia and New Zealand.

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