Rafael Nadal and Novak Djokovic hope to break the record for the largest crowd . They aim to draw 80,000 fans -- the previous record of 35,681 set in 2010 . Pitch at Real Madrid 's Bernabeu Stadium in Spain to be transformed into tennis court . The Spanish football club 's pitch will be transformed into a tennis court , with the event taking place in the gap between between Wimbledon and the London Olympics . World No . 1 Roger Federer is expected to play his first match since Wimbledon on Sunday against Juan Martin Del Potro, who beat him last year.
Rafael Nadal and Novak Djokovic hope to break the record for the largest crowd . They aim to draw 80,000 fans -- the previous record of 35,681 set in 2010 . Pitch at Real Madrid 's Bernabeu Stadium in Spain to be transformed into tennis court . World No . 1 Roger Federer is expected to play his first match since Wimbledon on Sunday against Juan Martin Del Potro, who beat him last year.