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Thunderclap over London: the superstar of sprint Usain Bolt has missed his farewell with the 100-m being deprived of a final world title by the bad, loved Justin Gatlin, income from a suspension of four years for doping and sacred under the jeers of the public.

Usain Bolt began the countdown to his final race by anchoring Jamaica to the 4x100m relay finals with an easy win in the heats here today.

Farah has won Great Britain's sole gold medal of the championships - the 10,000m on the first day - and is aiming to mount a double defence of the titles he won in 2013 and 2015.

Japan took bronze in 38.04.

The race comes as Jamaican track and field legends Merlene Ottey and Bolt shared an iconic moment in London this week, when the "sprint queen" visited with local athletes at the World Championships. After a decade of demonstrable superiority, particularly on the men's side, Jamaica's dominance has been disrupted at one of track and field's most consequential gatherings.

The four - the same line-up who won Team GB's first 4x100m relay bronze in 32 years in Rio last summer - crossed the line 0.09 seconds behind the United States of America, with Germany qualifying as third fastest.

"I stayed very focused, after all that I managed to win, it's incredible, Usain has so much contributed to our sport, we are so inspired, and to be here at this point of my career is huge".

"I think I almost cried" Bolt said."I was just saying goodbye. That was it. Saying goodbye to my events. Saying goodbye to everything."Reuters

It was success too for the men's and women's 4x400m teams as both progressed to Sunday's finals.

2004 Olympic champion Justin Gatlin of the United States won gold in 9.92 seconds with his compatriot Christian Coleman taking silver in 9.94. The Jamaican 4x100m relay team have been nearly unbeatable since he arrived on the big stage, winning gold at the past seven Olympics and World Championships.

For he is just one of a suspicious number of Bolt's Jamaican teammates who, like Gatlin, have returned to competition after testing positive for PEDs. "I'm shocked he's actually going, he's got a lot more years in those legs and it'll be sad to see him go also". Bolt routinely slowed down before crossing the finish line.

Just behind were Brazil in 42.77, while a Trinidad and Tobago team of Kelly-Ann Baptiste, Michelle-Lee Ahye, Semoy Hacket and Khalifa St Fort might have expected to finish with a quicker time than 42.91 and a higher placing than fourth, although they still progressed. Yohan Blake coming in for the final is definitely good'. His leg on Jamaica's 400-meter relay team will give fans a final look at what has been a glorious history.

It was the first time Bolt had been beaten at a major championships since the 4x100m relay at the 2007 worlds in Osaka.

But while the image of the eight-time Olympian collapsed on the track nursing his calf, long after the race had finished, certainly made for an unwelcome sight, it was a night to remember for Great Britain's golden quartet.

The women's 4x400m team of Zoey Clark, Laviai Nielson, Perri Shakes-Drayton and Emily Diamond qualified in second from their heat.