Brendan Hansen is heading back to the Olympics, winning the 100-meter breaststroke at the U.S. Olympic Swim Trials Monday night with a time of 59.93 seconds, eight-tenths of a second behind the mark he set two years ago.

Considering two world records were shattered Sunday on the meet's first day and two more fell in Monday's morning preliminaries, Hansen's showing was a big letdown for a near-sellout crowd at the Qwest Center.

"I'm a little disappointed at the time," Hansen said "I was a little nervous coming in. I wanted to secure my spot on the team."

Katie Hoff made it 2-for-2 at the trials, rallying over the final three laps to win the 400 freestyle just one night after she bumped off the world record in the 400 individual medley.

The 19-year-old from Baltimore was the first trials swimmer to earn a second race in Beijing. But she's just getting started, planning to swim four more events in a program that is just slightly less ambitious than Michael Phelps.

Speaking of Phelps, he cruised through the prelims and semifinals of the 200 freestyle and headed into Tuesday night's final facing another showdown with friend and rival Ryan Lochte.

Lochte was the fastest qualifier at 1:45.61 with Phelps right on his heels at 1:45.64. Look for another memorable race after they both went under the old world record in the 400 IM, with Phelps holding off Lochte in the lunge for the wall.

Lochte had a busy day, also qualifying for the final of the 100 backstroke.

Christine Magnuson won Monday's other final, claiming her first trip to the Olympics with a win in the 100 butterfly. The victory was aided by Natalie Coughlin's decision not to swim the event at these trials even though she held the American record.

"She's a great swimmer," said Magnuson, whose winning time of 58.11 was well off Coughlin's mark of 57.34. "It really opened up an opportunity for the rest of the field."

Coughlin was focused on the 100 backstroke, reclaiming her world record during the morning prelims, about two minutes after Hayley McGregory took it away during the previous heat.

McGregory touched in 59.15, breaking Coughlin's 4 1/2-month-old standard of 59.21. A little perturbed that someone had taken her mark, Coughlin went out and won her heat in 59.03, the 42nd world record set this year in Speedo's revolutionary LZR Racer suit.

Neither went as fast in the evening semifinals, but easily locked up their spot in the race that counts.

Hansen didn't even swim as fast as he did in Sunday's semis when he put up a time of 59.24 that was just off his world record of 59.13. After that effort, Hansen stared confidently at the scoreboard, as though it would be no trouble to knock off the rest of the time. Instead, he got off to a sluggish start, making the turn already 36-hundredths off his record pace.

Hansen couldn't make it up on the return lap, though he was the only swimmer to break a minute. Mark Gangloff claimed the likely second spot on the team at 1:00.42 seconds.

"I was expecting a world record," Hansen said. "Someone upstairs didn't want me to do it tonight, but someone upstairs will want me to do it in a few weeks" at Beijing.