Olympic silver medalist, the promising young Nijel Amos got pipped at the line in his slowest heat of the semi-finals and had to watch the final.

With his compatriot Ferguson Cheruiyot Rotich on his shoulder, the two acted as a wall at the front, but nobody else looked like they wanted to pass.

200 more metres went by at the slow pace, finally Kszczot tried to sneak by on the inside, but Rudisha wouldn't let him, accelerating to maintain the lead and continuing to speed up.

With world leader and notable kicker Amel Tuka perfectly aligned to pounce, Rudisha just continued to speed up.

[3] Tuka's speed was not in evidence to the same degree as his previous races this season, instead straining to go around Cheruiyot to get the bronze medal.