British superstar Mo Farah won the first gold medal of the 2017 IAAF World Athletics Championships on Friday and retained his 10,000-metre title, while Usain Bolt eased into the men's 100-metre semi-finals at the Olympic Stadium.
After topping the podium in Moscow in 2013 and Russia in 2015, Farah raced to 10,000-metre glory in front of a home London crowd with a time of 26 minutes, 49.51 seconds, beating Ugandan runner-up Joshua Cheptegei and Kenyan bronze medal-winner Paul Tanui.
Bolt ran a time of 10.08 seconds in his heat without really stepping out of second gear, while compatriot Yohan Blake and Christian Coleman of the United States also progressed from the preliminary round.