Michael Phelps put on another dominating performance at the Beijing Olympics, winning the 200-meter freestyle Tuesday with a third straight world record.
The American's ninth career gold medal tied him with Mark Spitz, Carl Lewis, Paavo Nurmi and Larysa Latynina for the most in Olympic history.
Racing out of lane six, Phelps quickly surged to the lead and led by a full body length halfway through the second of four laps. Phelps was nearly two seconds ahead of the field when he touched in 1 minute, 42.96 seconds, breaking the mark 1:43.86 he set at last year's world championships.
"I just wanted to be out at the 50-meter point and that's where I was," Phelps said. "I was in open water and it was difficult for the other guys to see me."
Park Tae-hwan of South Korea took the silver in 1:44.85, touching while Phelps was already looking at the scoreboard. Peter Vanderkaay, one of Phelps' training partners, gave the U.S. another medal by claiming the bronze in 1:45.14.
"I knew Park is strong in the last 50 meters," Phelps said of the 400 free gold medalist, "so I knew I had to be fast and concentrated."
Phelps is now 3-for-3 in Beijing, keeping him on course to beat Spitz's 36-year-old record of seven golds in a single Olympics. He opened with a world record in the 400 individual medley, then led off a victory in the 4x100 free relay.
"Phelps swam so fast," Park said of the 200 free. "It is my honor to compete with him."
Phelps will go for his fourth medal and 10th overall on Wednesday in the 200 butterfly, yet another event in which he holds the world record. He qualified for the final an Olympic-record time of 1:53.70, tying his time from the preliminaries.
Aaron Peirsol won the men's 100 backstroke, defending his title with a world-record time and extending the United States' dominance of the event.
Peirsol finished in 52.54, lowering his old mark of 52.89 set at last month's U.S. trials.
Teammate Matt Grevers earned the silver in 53.11. Arkady Vyatchanin of Russia and Hayden Stoeckel of Australia tied for the bronze in 53.18.
The Americans have won the men's 100 back at four consecutive Olympics, with Peirsol taking the title at the 2004 Athens Games in a time that was 0.17 seconds slower.
Natalie Coughlin won the 100 backstroke, becoming the first woman to ever defend her title in the event. She finished in 58.96 seconds, briefly going under world-record pace at the 50.
"It hasn't really sunk in yet," Coughlin said. "I knew when I saw the '1' by my name, because at first I thought I saw the clock wrong. It's a great feeling."
World record holder Kirsty Coventry of Zimbabwe earned the silver in 59.19. Margaret Hoelzer of the United States took the bronze in 59.34. Six of the eight finalists swam under 1 minute.
Coughlin earned her second medal of the Beijing Games, having won a silver in the 4x100 freestyle relay. Coventry was the silver medalist in the 400 individual medley.
In the semifinals of the women's 200 free, Katie Hoff advanced with the second-fastest time of 1:57.01. The 19-year-old American, who's like a little sister to Phelps, is still trying to win her first gold medal after settling for bronze and silver in her first two events. She still has three more individual races, plus a relay, to make up for that void.
Sara Isakovic of Slovenia was the top qualifier at 1:56.50.
Cancer-stricken Eric Shanteau made his Olympic debut Tuesday night, easily advancing out of the 200-meter breaststroke preliminaries just a couple weeks before he will undergo surgery.
Carrying the hopes of cancer survivors he's heard from since going public with his diagnosis last month, Shanteau smoothly stroked his way through the four-lap race and qualified seventh in 2:10.29.
"This was the longest day of my life," he said. "That's why I'm glad finals are in the morning because you wake up, you race and you're not sitting around thinking about it all day."
Defying conventional medical wisdom, Shanteau decided to put off surgery to compete in the Olympics, but only after being checked repeatedly to make sure the cancer wasn't spreading and threatening his chances of a full recovery.
The 24-year-old swimmer from Lilburn, Ga., found out he had testicular cancer just weeks before last month's U.S. trials, where he upset Brendan Hansen to earn a trip to China.
"It was weird walking on deck," Shanteau said. "I was totally clear — not too many nerves, excited, but pretty calm. It almost didn't feel like the Olympic Games. That was probably good in a sense."
He moves on to the semifinals Wednesday morning, with finals on Thursday morning.
Shanteau and the rest of the world's top swimmers got the spotlight to themselves on a Michael Phelps-less night at the pool.
With Phelps off snoozing at the athletes' village ahead of two finals Wednesday, his teammates set him up to claim another gold medal by qualifying fastest in the 800 free relay.
David Walters, Ricky Berens, Erik Vendt and Klete Keller combined for a time of 7:4.66 seconds, lowering the old Olympic record of 7:07.05 set by Australia at the 2000 Sydney Games.
Their effort guaranteed lane 4 for Phelps and the rest of the relay team, which goes for its second consecutive Olympic title in a U.S.-dominated event.
The Americans finished a whopping 3.18 seconds ahead of second-place Italy, making another gold for Phelps seemingly inevitable. He is 3-for-3 in his events so far.
"We knew we were going to put up a fast time, we just didn't want to screw it up," Vendt said. "We were about as safe as you can get. I basically waited until they touched the wall before I even started my windup."
Vendt was inspired for his swim by watching Shanteau.
"He's just a great guy," he said. "The fact he even went through that at trials and still came out on top way he did says so much about who he is and what he is."
Standing behind the starting block for the 200 breaststroke, looking down the length of the pool, Shanteau said he had a realization.
"You hype it up so much in your head and then you get out there and you're like, 'Wow, this is just another meet, I'm here to do the same thing. It's no different,'" he said. "But at the same time that was still a dream come true for me just to be able to race in the games."