MIAMI, FL – MARCH 24: The World���s first ever game of tennis on water involving two of the World���s highest profile tennis players, Rafael Nadal of Spain and Serena Williams of USA in action during a Sony Ericsson Open tennis preview event on the swimming pool of the Hotel Gansevoort on March 24, 2008, in Miami South Beach, Florida. (Photo by Clive Brunskill/Getty Images for Sony Ericsson)