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Bernard Lagat already has a solid track and field resume, having won the bronze medal in the 1,500 meters at the 2000 Olympics, and the silver in 2004.

Lagat won those medals for Kenya, but he's now an American, and at the U.S. Olympic trials he won both the 1,500 and the 5,000. (As Jere Longman of the New York Times notes, all three U.S. Olympians in the men's 1,500 meters are immigrants: Lagat from Kenya, Leonel Manzano from Mexico and Lopez Lomong from Sudan.)

Winning the 1,500 and the 5,000 made Lagat the only double winner at the track trials, and he has a good chance at winning gold in both in Beijing. Tyson Gay was expected to emerge from the trials as the biggest star in American track, but his fall in the 200 meters prevented him from matching Lagat's double win. In six weeks, Lagat may be America's top track star.