Unbeatable Bolt signs off with triple-triple

Usain Bolt has landed the historic Olympic sprint triple - with a little help from his friends.

While Asafa Powell, Yohan Blake, Nickel Ashmeade and Bolt won the final race of the day, the US were able to celebrate a gold medal in the women's 4x100m relay - long jump champion Tianna Bartoletta, Allyson Felix, English Gardner and Tori Bowie recording the second-fastest time in history, a scintillating 41.01 seconds. They defended their gold medal in 41.01 seconds, the second-fastest time in history, behind the world-record 40.82 they set in London.

Bolt made it a clean sweep of 100m, 200m and sprint relay golds from three successive Games to bring his gold medal haul to nine.

Traditionally a power in the women's game, but having never won an Olympic medal, Denmark will be the underdog Sunday against a French team which is reigning Olympic and world champion.

Asafa Powell ran the first leg for Jamaica, followed by Yohan Blake.

When Bolt received the yellow baton from Ashmeade for his final run down the straightaway, he was even, maybe a step behind, Aska Cambridge of Japan and Trayvon Bromell of the United States.

The U.S. women won the 4x100-meter relay on Friday night in Rio.

The USA, which had been tipped to push Jamaica, finished in third place but was disqualified, elevating Canada to the bronze medal position. It was the third medal from the 2016 Games for Andre De Grasse, along with his 200m silver medal and 100m bronze medal.

The handover between lead-off runner Mike Rodgers and Justin Gatlin was adjudged to have started before the exchange zone and the Americans were disqualified as they were on their lap of honour. "I am just relieved".

"You work so hard with your team-mates for that moment when you can come together".

Bolt has said he plans to retire following next year's World Championships in London, meaning Friday most likely provided the final chance to see the most successful sprinter of all time performing on the grandest stage.

"There you go, I am the greatest", Bolt told reporters. "But it's been a great career, I've done great, I'm just happy with myself". "All that hard work just crumbles". "It's come true", Bolt said. I look at it as accomplishment. In one of the biggest surprises of the track program, Japan took silver - and had been leading before Bolt got the baton.

The 29-year-old superstar, widely seen as the greatest sprinter in history, stormed over the line in 37.27sec to trigger an eruption of adulation in the Olympic Stadium.

Counting all the preliminaries, finals and his approximately nine-second blast down the stretch in Friday's last race, Bolt has spent 325 seconds - a tad less than 5 1/2 minutes - running on the track at the Olympics since he made his debut in Beijing eight years ago.

"I'll stay up late tonight", Bolt said when asked how he'd celebrate. This is my last one.