Jamaica's Usain Bolt celebrates winning the men's 4x100m relay final (REUTERS) LONDON – Usain Bolt can go ahead and trademark that now-famous line in his unforgettable Jamaican accent – "One, two, tree." That’s how many gold medals he has defended from the 2008 Beijing Games, helping Jamaica win Saturday night's 4x100 in world-record fashion at Olympic Stadium.

Bolt single-handedly won gold in the final 100 meters, with the U.S. and Jamaica making the final handoff in a dead heat. After Jamaica's Yohan Blake tracked down America's Tyson Gay on leg three, all that was left was for Bolt to win an even race to the finish. And as he has done so often, Bolt exploded in the anchor leg with his long strides, easily outdistancing American Ryan Bailey by five meters and finishing in 36.84. That was good enough to shave two-tenths of a second off the previous world record of 37.04 and gave Bolt ownership of the three most coveted world records in men's track: the 100 meters, 200 meters and the 4x100 relay.

[ Video: Usain Bolt blasts into history ]

"Once Yohan got the

Allyson Felix takes the baton from team mate DeeDee Trotter in the women's 4x400m relay final (REUTERS) LONDON – Twenty years of gold. That's how long the U.S. women have owned the 4x400 relay after winning the event again Saturday night.

The U.S. foursome of DeeDee Trotter, Allyson Felix, Francena McCorory and Sanya Richards-Ross were never seriously challenged, grabbing a 10-meter lead after the first leg by Trotter and never looking back. With three clean handoffs, Richards-Ross took the baton on the final leg with a 40-meter lead and never relented, holding that margin through the anchor and capturing gold in 3:16.87. The time was the third fastest in U.S. history.

Russia (3:20.23) took silver and Jamaica (3:20.95) finished with the bronze.

"We thought it was going to be really tight," Trotter said. "… My job was to get us ahead of the other. We were going for some records tonight so my goal was to get out fast."

[ Video: Why Allyson Felix finally won individual gold ]

"These ladies made it too easy for me," Richards-Ross said. "It was really fun to be able to go out with

Oscar Pistorius competes in the Men's 4 x 400m Relay Final (Getty Images)

LONDON – South Africa's Oscar Pistorius will leave London with enduring memories, but no medal.

The South African 4x400-meter relay team finished last in the final on Friday night, ending Pistorius's chance at becoming the first double amputee to capture a medal in the Olympics. Pistorius, who was born without a fibula in either of his legs, became the first double amputee to compete in track and field in the Games, running in the 400 meters and in Friday's 4x400. He advanced to the semifinal round of the 400 meters before being eliminated and never had a chance to medal in the 4x400, with South Africa trailing the entire field by the time Pistorius took the baton on the anchor leg.

Despite the sputtering finish, Pistorius was left glowing about his Olympic Games. Now he's preparing to harness the momentum and carry it into the Paralympic Games, which begin on August 29.

"If I took all the positive things that I could have thought about this and multiplied them by 10, it

Carmelita Jeter, Bianca Knight, Allyson Felix, and Tianna Madison celebrate after winning the Women's 4 x 100m Relay Final (Getty Images)LONDON – The U.S. women got a measure of revenge against the Jamaicans on Friday night – and in stunning world-record style.

The U.S. 4x100 women’s relay team obliterated the Jamaicans en route to a world record in the event, capturing gold at 40.82 – shaving .55 off the previous record of 41.37 set by East Germany in 1985. Carmelita Jeter ran a brilliant anchor leg for the U.S., opening the gap over the Jamaicans in the final 100 meters. As Jeter crossed the finish, she pointed at the track scoreboard and erupted in elation at the new world record. The foursome of Tianna Madison, Allyson Felix, Bianca Knight, and Jeter also became the first 4x100 U.S. women's relay to break the 41-second barrier.

[ Video: Watch U.S. track star Allyson Felix's intense workout ]

The Jamaicans took silver at 41.41, while the Ukrainians captured bronze at 42.04.

"I knew we could challenge the world record," said Madison. "To smash it, I had no idea."

"Our names are going down in history,"

LONDON – No respect … that’s what Usain Bolt has for Carl Lewis.

The reigning 100- and 200-meter Olympic gold medalist blasted Lewis in his press conference Thursday, ripping the former U.S. champion for remarks Lewis has made about the Jamaican team and doping in track.

"I'm going to say something controversial. Carl Lewis – I have no respect for him," Bolt said. "The things he says about the track athletes are very downgrading. I think he's just looking for attention, because nobody really talks about him. I've lost all respect for him. All respect."

[Video: Usain Bolt blasts his way into history]

Asked why he had such a negative opinion of Lewis, Bolt cited remarks by the five-time U.S. Olympian.

"All the drug stuff,"Bolt said. "For an athlete to be out of the sport and to be saying that is really upsetting."

Earlier in the same press conference, a U.S. reporter began to ask Bolt a doping question about the Jamaican track team and erroneously referred to it as "the

LONDON – Ashton Eaton is the world’s greatest athlete. And Trey Hardee isn't far behind.

Eaton took gold in the Olympic decathlon – the event that bestows the title of "world’s greatest athlete" – holding off his U.S. teammate Hardee on the final day of competition. The world-record holder in the event, Eaton accumulated 8,869 points for the win. Hardee finished second with 8,671 points. The 1-2 finish is the first time in 56 years that the United States has won gold and silver in the event, matching the feat of Milt Campbell and Rafer Johnson in the 1956 Melbourne Games.

And on a day when Usain Bolt was calling himself the “greatest athlete to ever live," Eaton’s traditional title was echoed by his top competitor.

"So Ashton doesn’t have to sound selfish or self-centered, Ashton is the best athlete to ever walk the planet – hands down," Hardee said. "The title bestowed upon the Olympic champion in the decathlon is 'world’s greatest athlete.' Ashton is the world-record

LONDON – Move over, Carl Lewis. Usain Bolt has chased down legendary status.

Bolt became the only man in Olympic history to successfully defend both the 100-meter and 200-meter gold medals, coming in at 19.32 seconds and edging Jamaican teammates Yohan Blake and Warren Weir on Thursday night. Crossing the finish line with a finger to his lips – as if shushing his critics – Bolt officially silenced anyone who doubted his standing among the greats in track history.

[ Related: Bolt blasts Lewis after track legend made critical comments ]

"That was for all the doubters," Bolt said. "That was for all the people that was saying I wasn't going to win and I wasn't going to make myself a legend. That was just for them -- to say, 'You can stop talking now. I'm a living legend.' That was it."

Earlier this week, Bolt joined Lewis as the only sprinter to successfully defend the 100-meter Olympic gold, with Lewis having pulled off the feat in Seoul in 1988 after winning in the 1984 Los

(AP)LONDON – Ashton Eaton's quest for another world record in the decathlon began Wednesday with the smashing of an Olympic record that stood for 44 years.

The favorite for gold – and the title of world's best athlete – ran a searing 100-meter dash in 10.35 seconds to start the 10-event program. That smashed the previous best by a decathlete, clipping the 10.41 run by Bill Toomey of the U.S. in the 1968 Mexico City Games. Eaton followed his blazing run with the best long jump of the day at 8.03 meters and placed 11th in the shot put (14.66 meters) to take the early points lead with a morning total of 2,848. His teammate, Trey Hardee, finished the morning session in second place with 2,743 points, finishing second in the 100 meters, sixth in the long jump, and fifth in the shot put.

[ Related: Why Lolo Jones's finish is no surprise ]

"It was a fantastic morning," Eaton said. "I'm in first. What more can I say? The marks were decent, I guess. I'm not looking for anything super special