Britain's Mo Farah overcame the shock of a mid-race fall on Saturday to take a second straight Olympic 10,000m title and extend his remarkable record at global championships. The 33-year-old produced a trademark surge over the last 100 metres to time 27min 05.17sec in the 25-lap race.
Kenyan Paul Tanui won silver in 27:05.64 with Ethiopian Tamirat Tola third in 27:06.26.
Farah tumbled in the 10th lap after being clipped by American training partner Galen Rupp.
But he brilliantly recovered to accumulate a second 10,000m title to add to the 5,000m gold he also won in London four years ago.
"When I went down, I thought, 'Oh my God, that is it.' I just got up and wanted to stick with the guys and stay strong," Farah said.
"It's never easy but everyone knows what I can do."
Farah added: "I thought about all my hard work and that it could all be gone in a minute.
"I wasn't going to let it go. I got up quickly. I thought about my family. It made me emotional."
It was his eighth successive win in the 5,000 or 10,000m at a world championships or Olympics since 2011, when Ibrahim Jeilan beat him over 10,000m in the Daegu world championships.