Mallorca, Spain - One is the king of grass, the other the king of clay. On 5/2/2007, Roger Federer or Rafael Nadal played in a one of a kind match that is half grass and half clay in front of a sellout crowd of nearly 7,000…

We’ve seen tennis played on grass, on clay, in the air, over a river, but ON water??
Serena Williams and Rafael Nadal, played on water on a specially constructed tennis court on top of a swimming pool:
The water-covered court was constructed in the 110-foot swimming pool set in the Gansevoort’s exclusive 22,000-square-foot rooftop retreat. A specialist [...]

In preparation for the Dubai Duty Free Men’s Open, tennis legend, Andre Agassi and the world No. 1, Roger Federer, couldn’t resist the temptation to have a friendly knock about on the world’s highest tennis court, the [...]

this video is awesome. watch Andre and Roger make their way around the helipad, and try to hit a boat 700 feet below with a tennis ball!
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6/28/2004: Commuters crossing the river on Monday morning did a double-take as a tennis court floated downriver from the London Eye to Tower Bridge with John McEnroe and Monica Seles playing a match.

The floating tennis court was a publicity stunt by American Express to promote their Tennis at Tower Bridge event in Potters Fields Park [...]