Michael Phelps of the US celebrates as the US team swims to victory during the men's 4 x 200m freestyle relay swimming final at the National Aquatics Center during the 2008 Beijing Olympic Games in Beijing on August 13, 2008. The victory gave Phelps his fifth gold medal of the Beijing Games and the 11th Olympic gold of his career. [Agencies]

The 19-year-old, who says Phelps is like a big brother, has yet to match his success in the water. In her first two races, Hoff settled for a bronze and a silver, which look pretty good after Wednesday. Now, she's got only one more event — the 800 free — to win an individual gold.

"I went out there and I raced tough and that's all I can do," Hoff said. "It was definitely a tough day, but I think I handled it pretty well."

An inspiring Olympic story came to an end in the semifinals of the 200 breaststroke.

Eric Shanteau, who was diagnosed with testicular cancer just before the U.S. Olympic trials and put off surgery until after the games, failed to advance to the final.

He finished sixth in his semifinal heat and 10th overall, 13-hundredths of a second out of the last spot into the final.

Japan's Kosuke Kitajima, trying for his second straight sweep of the breaststroke events, cruised along as the top qualifier at 2:08.61. He already won the 100 with a world record after taking both golds in Athens four years ago.