Usain Bolt and Mo Farah get Athletics World Championships off and running – in pictures

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  Japan’s Yuki Matsushita, Russia’s Denis Kudryavtsev, Algeria’s Miloud Rahmani and Belgium’s Michael Bultheel compete in the 400-metre hurdles heats on Saturday at the 2015 World Championships. Damir Sgolj / Reuters

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  Cuba’s Yorgelis Rodriguez competes in the high jump in the women’s heptathlon event on Saturday at the 2015 World Championships in Beijing. Antonin Thuillier / AFP

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  Britain’s Mo Farah celebrates after winning the men’s 10,000-metre run at the World Championships at China’s Bird’s Nest National Stadium on Saturday. Johannes Eisele / AFP

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  Britain’s Mo Farah poses for ‘selfies’ with supporters after winning the men’s 10,000m run on Saturday at the World Championships in Beijing. Franck Fife / AFP

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  Mike Rodgers, centre, of the US and Usain Bolt of Jamaica compete in the men’s 100-metre heats on Saturday at the World Championships in Athletics. Phil Noble / Reuters

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  Usain Bolt of Jamaica crosses the line in first in his heat in the men’s 100 metres preliminaries on Saturday at China’s Bird’s Nest National Stadium during the 2015 World Championships. Ian Walton / Getty Images

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  Justin Gatlin of the United States, left, and Henricho Bruintjies of South Africa compete in the 100 metres heats on Saturday at the 2015 World Championships in Beijing. Andy Lyons / Getty Images

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  Bingtian Su of China, Kei Takase of Japan and Asafa Powell of Jamaica compete in the men’s 100-metre heats on Saturday at the 2015 World Championships in Beijing. Ian Walton / Getty Images

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  Britain’s Chijindu Ujah, centre, and Oman’s Barakat Mubarak Al Harthi, right, run in the men’s 100-metre heats on Saturday at the 2015 World Championships in China. David J Philip / AP

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  Eritrea’s Ghirmay Ghebreslassie shown running during his victory in the men’s marathon on Saturday at the 2015 World Championships in Athletics in Beijing. Greg Baker / AFP

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  Silver-medallist Yemane Tsegay of Ethiopia, gold medallist Ghirmay Ghebreslassie of Eritrea and bronze medallist Munyo Solomon Mutai of Uganda celebrate after crossing the line in the marathon on Saturday at the 2015 World Championships. Alexander Hassenstein / Getty Images

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  Christina Schwanitz of Germany on her way to winning gold in the women’s shot put during 2015 World Championships in Beijing on Saturday. Kai Pfaffenbach / Reuters

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  Russia’s Georgiy Gorokhov makes a clearance during the men’s pole vault qualification at the World Championships in Athletics at Beijing on Saturday. Andy Wong / AP

Images from Day 1 of the 2015 IAAF World Championships in Athletics in Beijing on Saturday, where Usain Bolt began his quest for the 100-metre title and Mo Farah claimed gold in the 10,000 metres. Click the arrows below to scroll through the photos.

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