"Usain Bolt of Jamaica falls down injured in the Men's 4 X 100 meters relay final during the World Athletics Championships at London Stadium, London, Britain, August 12, 2017. REUTERS/Matthew Childs/File Photo SEARCH ""POY SPORT"" FOR THIS STORY. SEARCH ""REUTERS POY"" FOR ALL BEST OF 2017 PACKAGES. TPX IMAGES OF THE DAY"
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