On the women front, Kosgei, who has not lost a race for the last two seasons, has earned the admiration of the selectors having shattered Paula Radcliffe's 16-year record in Chicago last year clocking 2:14.04.

In April Kosgei won the London marathon in 2:18:20 ahead of Vivian Cheruiyot 2:20:14. Cheruiyot later was fourth at Valencia marathon having skipped Berlin with a tendon injury.

Kosgei will lead the Kenya onslaught in Tokyo accompanied by 2018 London Marathon champion Vivian Cheruiyot and World marathon champion Ruth Chepng'etich.

Kenya has a tough task to retain the title won in Rio Olympics by Jemimah Sumgong, who later failed a dope test and was banned from the sport.

On the women reserve bench will be Frankfurt marathon champ Valary Aiyabei and Berlin bronze medalist Sally Chepyego.

"It is a dream come true," said Cheruiyot. "My goal for 2020 is to win at the Tokyo Olympics. But I also have unfinished business in London."

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