Tennis legend Roger Federer recently thrilled fans worldwide by announcing his plans to return to the court — not in full competition, but through a series of exhibition matches aimed at filling stadiums one more time.

With two of his greatest rivals now retired, Novak Djokovic remains the last standing member of the Big Three. This has led the Serbian superstar to admit he may not be as eager to take to the court as he used to be in the past.

Rafael Nadal retired from tennis last year, but the 22-time Grand Slam winner is still keen to get one over on his former rivals with a new tournament in a different sport