"We took a — not a gamble, but something different. I tried the LZR. I've always felt comfortable in that since last year," he said. "Jaked, still, I feel is a really great suit for me. They both fit right, so we're going to see what we can do at worlds. I try not to put too much faith in the suit. I put faith in the work I do."

Olympians Jones and Weber-Gale had already qualified for the team in the 400 freestyle relay.

Eric Shanteau completed a successful comeback meet, winning the 200 breaststroke 10 months after being declared free of testicular cancer that was diagnosed just before last year's Olympic trials.

He won in 2:08.01, bettering the American record time he set in the morning heats. Shanteau, who wore an Arena X-Glide, also will swim the 100 breaststroke and the 200 IM in Rome.

Chloe Sutton, a 17-year-old who competed in the 10-kilometer open water event at the Beijing Olympics, is going to the world championships in another pool event. She won the 800 freestyle in 8 minutes, 29.34 seconds. Haley Anderson took second.

Olympians Katie Hoff and Kate Ziegler have dominated the event in recent years, but Hoff didn't try to qualify after losing two other events here and Ziegler was sick.

Sutton also won the 400 free, qualifying for a major international pool competition for the first time. She typically churns through distance races in lakes and rowing basins, where the often wild and woolly open water events are held.

"I really wanted to make my pool swimming debut here," she said. "Right now my place is in the pool."

Sutton made the switch after she failed to qualify for the open water competition in Rome.

"That wasn't very fun for me," she said. "From now on, I'm only doing things that are fun."

Dana Vollmer qualified for her third individual event in Rome by winning the 100 freestyle, capping a successful meet nearly a year after she failed to make her second Olympic team.

She won in 54.00 seconds, just ahead of Olympian Amanda Weir in 54.03.

Olympic champion Rebecca Soni completed a sweep of the breaststroke events, winning the 200 in 2:20.38, the fastest time ever on American soil, but off her world mark of 2:20.22.

Keri Hehn, a 28-year-old from Fargo, N.D., who trains with Soni at Southern California, took the second spot for worlds, which will be the biggest meet of her career.

The 1,500 freestyle was a wide-open race because of the retirements of Erik Vendt and Larsen Jensen and Peter Vanderkaay's decision to skip the event. Jackson Wilcox, a 19-year-old from Nashville, Tenn., won swimming's version of the mile in 15:11.98 and Brennan Morris of Baltimore earned the second berth.