The world's top two players Novak Djokovic and Rafael Nadal will potentially play in front of a record tennis crowd in July.
World number one Djokovic will take on Spaniard Nadal at Real Madrid's Bernabeu stadium in a charity match.
The Spanish club have confirmed that they hope to attract over 80,000 people for the event.
"The objective of this exhibition match is to set a spectator record for a game of tennis, exceeding 80,000," read a statement on the club's official website.
Nadal is a confessed supporter of Los Blancos, while Djokovic has previously worn a Real jersey at the Madrid Masters.
