David Ashdown was in Beijing covering the 2008 Olympic Games
This picture shows Michael Phelps shouting his head off after he won his second gold of the Olympics as part of the relay team. It was taken from the opposite end of the pool. Sometimes the pictures of people waiting after they've already competed are better as a lot of tension builds up during the race.
Picture taken on a Nikon D3, 500mm lens with a 1.7 teleconverter making the lens 850mm, aperture F6.3, shutter speed 1/640th of a second