Four-time Wimbledon champion Roger Federer will play two-time French Open winner Rafael Nadal on a unique half-clay, half-grass court on this Spanish island Mallorca.

"The result is not the most important thing. It's about having fun out there," the top-ranked Federer said. "It's going to be exciting and a good atmosphere. It doesn't always need to be crazy serious out on the match courts."

Organizers needed 19 days and $1.63 million to create the court, which divides the surfaces by halves for a unique match in which a player can receive on clay and hit a winner on grass - or vice versa.

A sellout crowd of nearly 7,000 is expected at the Palma Arena for the match, which is backed by the Balearic Islands tourism bureau.

"I like the fact that the stadium is located in Mallorca, Rafa's home," Federer said. "He has been to Basel (Switzerland) after all, and now I've got the opportunity to play at his place for once."

Federer hasn't lost on grass in four years, a 48-match run that includes four straight titles at Wimbledon. Nadal holds a 7-3 career edge against Federer - and Nadal comes from Mallorca.