Yikes, Novak Djokovic lost in the second round of Wimbledon to Marat Safin. Many thought Djokovic would play spoiler to the nearly inevitable Federer/Nadal final. (P.S. Euro 2008 semis, Turkey vs. Germany, 2:45 ET today on ESPN.)
Novak Djokovic lost the US Open final to Roger Federer last night but the 20-yo Serb clearly left his -- how do I put this? -- impression on the tournament. Here's some video of Djokovic impersonating Maria Sharapova and Rafael Nadal at the US Open. He does several other players as well, including a fine Andy Roddick.
Update: In case you're unfamiliar with the mannerisms of the players mentioned above, here's video of Roddick, Sharapova, and Nadal. (thx, flip)

