His coach Brother Colm O'Connell now hopes Rudisha, who is the only man to have run under one minute and 41 seconds, will see the truth of the circumstances and call-out on his time.

"There is no point coming back and be there. If he is a championships runner and has a reputation, which he has to look at. He proved it in Rio Games coming back from injury largely based on his tactics because there were challenges and there were pretenders," O'Connell said.

In his absence, Kenya has relied on Africa silver medalist Emmanuel Korir, Commonwealth Games champion Wycliffe Kinyamal and Ferguson Rotich.

However, the trio have never been successful challenging the dominance of Botswana's Olympic silver medalist Nijel Amos.

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