Rionoripo and Kiprop replace Keitany and Chicago Marathon champion Florence Kiplagat.

The two absconders is said had bad blood with the selectors after they were overlooked in the selection to the Rio Olympics.

Keitany missed out on Olympic selection after finishing ninth at the London Marathon last year with Kenya opting to place her in the reserve bench and selected world marathon silver medalist Helah Kiprop, 2016 London Marathon winner Jemima Sumgong, who went on to win gold in Rio Olympics, but tested positive to banned EPO, and 2016 Paris Marathon champion Visiline Jepkesho. Kiplagat was third in London and was also overlooked.

"My body needs some rest, having broken the world marathon record in April 23, besides running my fastest half marathon race in February, it is not easy to pick another race too soon. Maybe I need another two months and New York will be a better place to run. I am tired and I don't want to embarrass my country by failing to win in London," said Keitany.

Their withdrawal has now handed Kenyan marathon couple Paul Lonyangata and Purity Rionoripo, who took Paris Marathon by storm in April, another opportunity for a shot at the world marathon titles.

Rionoripo had been named in the reserve team alongside Agnes Barsosio, who has also been knocked out by an injury. Commonwealth Games champion Philomena Cheyech and Valentine Kipketer, who finished second in 2016 Chicago Marathon are now on women's reserve bench.

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