"I'm sad, because it's always difficult to lose, in any place and against any opponent. ... But it was Federer, he's the favorite and I gave everything on the court." — Colombian Alejandro Falla, beaten Saturday by Federer 6-3, 5-7, 6-3. Writes AP's Christopher Torchia: "The startling momentum swing in the second set was a reminder of how even the game's greats can be vulnerable to a tenacious foe, and their own doubts."

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EDITOR'S NOTE — "Eyes on London" shows you the Olympics through the eyes of Associated Press journalists across the 2012 Olympic city and around the world. Follow them on Twitter where available with the handles listed after each item, and get even more AP updates from the Games here: http://twitter.com/AP_Sports