Mo Farah had to make do with silver in the 5,000m final as his glittering track career ended in disappointment.
The Briton had been the strong favourite coming into the race having been unbeaten over the distance since 2011.
However he could only look on as Muktar Edris crossed the line in front of him, with the Ethiopian cheekily performing The Mobot as he did.
People weren’t impressed, with some seeing the celebration as disrespectful to Farah.
Here’s how some were reacting on Twitter…
Fellow Briton Andrew Butchart, who finished eighth, felt for his compatriot at failing to win gold in his final track race before focusing on the road.
‘I’m gutted for Mo, but he is the best in the world. Look at what he has done. He leaves a legend. I know he will be upset.’
Mo’s medals since 2011
2011 World Championships: 5,000m gold, 10,000m silver
2012 Olympics: 5,000m gold, 10,000m gold
2013 World Championships: 5,000m gold, 10,000m gold
2015 World Championships: 5,000m gold, 10,000m gold
2016 Olympics: 5,000m gold, 10,000m gold
2017 World Championships: 5,000m silver, 10,000m gold