But it's still cool. A nice idea. And the commentators did a great job of acting with their voices to sell it. The CG looked half decent too.

Look at all the Criss Angel tricks. Nobody would say THEY aren't real.

If you want to get picky, the shots with the audience could be real, but the actual pictures of the ball don't even show any faces in the same shot. But they wouldn't edit that, would they?

Roddick tends to play high-profile matches, and those tend to have ads and logos and such plastered over all aspects of the coverage. Here, the walls are bare. Also the announcers wouldn't seem as generic and disinterested. Add to that the fact that there are lots of empty seats (which you would NEVER see in a Roddick televised match) and it's mighty suspicious. Plus, the physics of it really just don't work, unless the court is intensely watered down. The ball is simply too soft and elastic to penetrate clay like that.

Then, add funtrivia.com's easily Google-able answer: "Powerade. Andy appeared in a TV ad for Powerade sports drink. In the ad, Andy appears to be playing a match in which he just received a bad line call. Upset with the call, he takes his frustration out on his next serve which is so hard that it sends the ball right into the ground of the clay court he's playing on. Some wondered whether this was an actual match, and if Andy actually served the ball into the ground. The answer is no. It was all setup specifically for the commercial, and the ball being served into the ground was done with special effects."