COLLEGE PARK, Md. - In case anyone's forgotten, Michael Phelps proved once again Wednesday night at the ConocoPhillips Summer National Championships that he's a force in just about every event he swims.

Phelps, 18, of the North Baltimore Aquatic Club won his 11th and 12th career national titles in the 100m free and 200m back. His time in the latter event, a 1:56.10, was the fourth fastest ever, and only Olympic gold medalist Lenny Krayzelburg and world record-holder Aaron Peirsol have gone faster.

His time in the 100m free (49.19) wasn't too shabby either. In fact, it was the 10th fastest in the world this year.

"I was equally satisfied with both events," Phelps said. "Both were best times, and both were about what we expected.

"I definitely would have liked to break the world record in the 200 back, but the last 30 meters were pretty painful. I felt like I hit a brick wall. I was pretty beat after that."

Phelps was ahead of the world record pace at the 100-meter mark, and only .07 off that pace at the 150, but he just couldn't muster his trademark finish.

"I knew I had to push it going out, but there's a lot of work to be done in that event if I'm going to be where I want to be," he said. "There's a lot I can do to get better."

While it was business as usual for Phelps, several new faces stepped up to make a name for themselves. Three of the eight races Wednesday featured first-time national champions, each of them grinning from ear to ear as they stood on the medal podium.

Caroline Bruce, 17, of the Wichita Swim Club was one of those first-timers. She won the 200m breast with a time of 2:27.88, four seconds off her previous lifetime best. It was also the 10th fastest time in the world this year.

"I was looking to be in the top three or something," Bruce said. "I still can't believe it. It's exciting. I couldn't stop smiling. It's something everyone always dreams of, but I never thought I'd make it."

Sarah Wanezek, 20, of Texas Aquatics won her first National title in the 100m free with a time of 55.73.

"It's kind of shocking," Wanezek said. "I was in a heat with seven other amazing swimmers. I knew I had a shot, but when you're in a race with all those Olympians, you can't count anyone out.

"I just tried to relax. I looked over at my teammates on the side of the pool. They're always doing something stupid to make me laugh. It helped a great deal."

Gary Marshall, 21, of Stanford has been aiming at his first national title for some time. He finally got it Wednesday with a win in the 200m breast. His time was 2:13.28.

"It's a good feeling to finally accomplish it," Marshall said. "It's been two years since I've gone my best time. I'm almost as excited about that as I am about winning."

No stranger to the limelight, Olympian Kaitlin Sandeno, 20, of Trojan Swim Club, won the 200m fly with a time of 2:08.78, the sixth-fastest time in the world this year.

"I've been swimming well this summer, and I've been feeling better than even two years ago," Sandeno said. "I just wanted to come in and put forth all the best races I could."

Winning the final two events of the night were Canadians Jennifer Fratesi (200m back, 2:12.47) and Brian Johns (200m fly, 1:59.29).