Norway's Karsten Warholm smashed the world record in the men's Olympic 400 metres hurdles final, breaking the 46-second barrier on the way to gold medal glory.

Warholm finished in 45.94 seconds, well ahead of his own previous record mark of 46.70. USA's Rai Benjamin claimed silver in 46.17, also beating the old world record, with Alison dos Santos taking bronze in 46.72.

"It's by far the biggest moment of my life," Warholm said. "It defines everything, all the hours I put in, everything that my coach has been working for.

"With all the respect for all the athletes, there are athletes that were not good that will get an Olympic gold. Rai running 46.17 would deserve a gold medal. It is crazy, it is just an honour to be a part of it. I never thought in my wildest imagination that this would be possible."

Asked about his dash to the line in the closing metres, Warholm added: "I couldn't even feel my legs. I knew I had a crazy American trying to catch me, so I ran for my life."

Germany's Malaika Mihambo admitted she could not watch the finale to the women's long jump as she won gold.

Mihambo took the lead with a jump of 7.00m with her final attempt before USA's Brittney Reese and Nigeria's Ese Brume had their last jumps.

Neither could better the leading mark, with Reese settling for silver with 6.97 metres on countback ahead of Brume.

"It was really hard to watch, so I tried to just have a sneak peek on the display and see how far it was," Mihambo said.

"I really don't like this position where you cannot do anything about it, and you just have to let the girls do what they're able to do. You have to wait, so it was a horrible moment, but at least it was short.

“I feel overwhelmed. It was, I think, the most exciting women’s long jump competition in history."

DURANT DOMINATES AS USA SURVIVE SCARE

The United States did not have it all their way but triumphed 95-81 over Spain to seal a spot in the men's basketball semi-finals.

Spain led by as much as 10 points in the second quarter before USA drew level by half-time and accelerated in the second half. Spain again closed within four points of the gold medal favourites in the final quarter, inspired by Ricky Rubio's 38 points.

Kevin Durant excelled for Team USA, with 29 points and four assists, while Jrue Holiday contributed 12 points and five assists as they capitalised on a 17-9 turnover differential.

USA lost to Australia and Nigeria in exhibition games prior to Tokyo 2020 before losing their Olympics opener to France but have since steadied.

The winner of Australia-Argentina will play USA in the semi-finals on Thursday.

NBA duo Zoran Dragic (27 points, six rebounds and four assists) and Luka Doncic (20 points, eight rebounds and 11 assists) starred as Slovenia also progressed to the semi-finals with a 94-70 win over Germany.

CARRINGTON'S GOLD KAYAKING DOUBLE

New Zealand's Lisa Carrington had a golden day in the kayaking, remarkably winning two gold medals within an hour.

Carrington won her third straight gold in the women's kayak single 200m with an Olympic best time of 38.12 seconds, ahead of Spain's Teresa Portela and Denmark's Emma Jorgensen.

The New Zealander backed up alongside Caitlin Regal to win the women's kayak double 500m final with a world best time of 1:35.785.

Carrington joined fellow kayakers Ian Ferguson and Paul MacDonald and equestrian great Sir Mark Todd as the only New Zealanders to have won five medals at the Olympic Games.

The 32-year-old may win more medals too, competing in the K1 500 event which starts on Wednesday.

“Today was about taking just one race at a time," Carrington said. "There's a plan, and it was just about executing it. For me, it was just trying to stay in the moment and doing the best I can. We've worked really hard and knew today was going to be a big day.”

HENDRICKX POWERS BELGIUM INTO HOCKEY FINAL

World champions Belgium qualified for the gold medal match of the men's hockey after a commanding final quarter sealed a 5-2 win over India.

Belgium piled on three fourth-quarter goals to guarantee a medal in the decider where they will face either Australia or Germany.

Alexander Hendrickx scored a hat-trick including two of the Red Lions' goals in the final quarter after India had fought back from an early deficit to lead 2-1 at quarter-time.

Drag flick expert Hendrickx has scored an unrivalled 14 goals during Belgium's Tokyo 2020 campaign, eight clear of the next best, Australia's Blake Govers.

Hendrickx said: "It's really a team job that comes together. It's my name on the scoresheet, but it's a team job."

World number one Australia and sixth-ranked Germany meet later on Tuesday to determine the other gold medal match finalist.

Karsten Warholm revelled in the "wow" factor of his astonishing 400 metres hurdles triumph as the world record was obliterated at the Tokyo Olympics.

The 25-year-old Norwegian ran 45.94 seconds, breaking the record for a second time in five weeks, after Kevin Young previously held the global mark for 29 years.

"I didn't touch one hurdle. I was even able to find another gear coming home, so 'wow'," Warholm said.

"It's just so big. It's almost like history here. It was the only thing missing from my collection. I had a World Championships [gold medal]. I had European Championships, I had the world record, the European record.

"The Olympic gold medal is what everybody talks about. I knew this race was going to be the toughest of my life, but I was ready."

The top three in the race all went under 47 seconds and beat the previous Olympic record, with silver for American Rai Benjamin in 46.17 and bronze going to Brazilian Alison dos Santos in 46.72.

Warholm ran 46.70 in Oslo at the start of July to slash 0.08 seconds off Young's long-standing record, which was set at the Barcelona Olympics.

There were many ways to dissect the magnitude of this latest record, and one was to look at how the world record shifted by just 0.75 seconds from Ed Moses running 47.45 in 1977 until Warholm's 46.70 in July.

To now scythe a further 0.76 seconds off the all-time mark represented a staggering achievement.

"I mean, man it’s so crazy. It’s by far the biggest moment of my life," Warholm said.

"It defines everything, all the hours I put in, everything that my coach has been working for.

"I dream about it like a maniac, I tell you. I sleep all night on it. I spend all my time thinking about this, so just getting this last medal into my collection, it’s complete.

"I can't sleep. I've spent thousands of hours thinking about this.

"I had this special feeling in my chest, you know when you are nervous. I was just thinking this is the feeling that I had when I was six years old. I've never had that feeling since I got older, but yesterday I had it."

Warholm had a healthy lead heading into the final 150 metres but came under pressure from Benjamin over the final two barriers, the gap closing.

The 25-year-old from Ulsteinvik held his nerve and maintained his rhythm, though, sprinting away to post a record that could stand for many years to come.

Some even compared it to Bob Beamon's 1968 long jump world record in Mexico City, which stood for 23 years and remains the second longest leap of all time.

Benjamin was reduced to tears after the race, having delivered the performance of his life but still finished on the second step of the podium

"Knowing that you want to be the best, this is what it costs. It's hard. It hurts. But it is what it is," Benjamin said.

"I always give myself 24 hours to process things. Right now I am just full of emotion. I have worked so hard. This is what matters. I got a medal but it just hurts to lose."

He added: "I'm a dog. I'm a fighter. It's my first Olympics. I made some mistakes that cost me, but it's all right. I'll fix it."

Karsten Warholm set a massive world record in the men's 400 metres hurdles as the Norwegian landed gold at the Tokyo Olympics.

He became the first man to dip under 46 seconds, setting a startling time of 45.94 seconds as he fended off American Rai Benjamin, who clocked 46.17.

The top three in the race all went under 47 seconds and beat the previous Olympic record, with bronze going to Brazilian Alison dos Santos in 46.72.

Warholm was already the world record holder, setting a time of 46.70secs in Oslo at the start of July to break the previous best of 46.78 that had been held by Kevin Young since the 1992 Barcelona Olympics..

Now he has demolished his own mark, helped by being pushed all the way by Benjamin.

Warholm had a healthy lead heading into the final 150 metres but then came under pressure from the USA star over the final two barriers, the gap closing.

The 25-year-old from Ulsteinvik held his nerve and maintained his rhythm, though, sprinting away to post a record that could stand for many years to come.

All three medallists went under the previous Olympic record.

Gold in the women's long jump went to Germany's Malaika Mihambo, whose final-round effort of 7.00 metres saw her edge ahead of America Brittney Reese and NIgerian Ese Brume, the silver and bronze medallists, who both posted best leaps of 6.97m.