GOLD COAST, Australia -- Michael Phelps was still getting over a mild slump when he heard Ian Thorpe was planning a comeback for the London Olympics.
The 14-time Olympic gold medalist freely admits he hates to lose. So news of the Australian's return couldn't have come as any better motivation for training.
Thorpe, who dominated swimming immediately before Phelps took the sport to unprecedented levels, beat his rival in an exhilarating 200-meter freestyle final at the 2004 Olympics.
"He and I only raced once over the 200 free. Having the opportunity to race somebody like him again -- maybe in the 200 freestyle -- I think will be super fun," Phelps said in an interview at the U.S. team's pre-world championship training camp on Australia's Gold Coast. "I've never had the chance and hopefully we get the chance over the next year."
Thorpe won that 200 final in Athens, with Pieter van den Hoogenband of the Netherlands second and Phelps third. But that was well before Phelps established himself as the world's greatest swimmer.
The man dubbed "Thorpedo" quit swimming in 2006, two years after his last major meet and prematurely ending a career that produced five Olympic gold medals, 11 world titles and 13 world records.
He was working in Beijing at the 2008 Games as an analyst when he publicly doubted Phelps' chances of breaking Mark Spitz's record haul of seven gold medals at the 1972 Olympics. After Phelps won his eighth, Thorpe was among the first to offer his congratulations.
"When he retired I didn't think it was true and I didn't think it was real," Phelps said. "But he found a hunger to want to come back and want to do it again. I'm excited. Having somebody like him back in the sport is going to be a lot more exciting.
"It's amazing to have Thorpie back. He's the kind of person who if he wants to do something he's going to make sure he will get it done."
The 200 freestyle is among the four individual events Phelps will swim at the world championships in Shanghai this month.
Thorpe wants to swim the 100 and 200 freestyle at the 2012 Olympics. But he wasn't eligible for the world championships because he formalized his comeback in February, not giving him enough pre-meet competition to clear doping testing hurdles.
Phelps had some downtime after the 2009 world championships, saying he was more interested in golf than hard workouts. He had to be dragged "kicking and screaming" to training.
His golf handicap didn't improve, but his attitude toward swimming did. He figured out what he needed to do to win more Olympic titles. After almost nine years unbeaten in the 200 butterfly, he lost three straight races at the distance to further sharpen his focus. Now he is primed for big meets.
"I needed to get out of that funk when I did because if I didn't I think it would have been too late," he said. "I have a lot of personal things I want to accomplish. Whether it's times, records, medals anything. I know what I want to do. ... If I do, you'll be able to tell what it is."
The only thing he'd give away was that he won't be aiming to match his medal haul from Beijing: "It won't be eight, though, I tell you that."
Thorpe is one of a host of veteran swimmers coming out of retirement.
Natalie Coughlin took a break after winning six medals in Beijing. She is now is back for her first major meet and was on the Gold Coast with Phelps and the rest of the U.S. squad.
And while she's using the worlds as a barometer for next year's Olympics, she doesn't believe Thorpe and Libby Trickett, a three-time Olympic champion making a return, will miss anything by not competing in Shanghai.
"I'm excited about what's going to happen in the next few weeks, but my main goals and all of my focus and training and everything is leading up to next year," she said. "Libby and Thorpie, they're seasoned competitors. They know what to do. They're just as focused on London as I am."