Roger Federer and Roger Federer among stars to pay tribute to Rafael Nadal . the Madrid Masters 's former president passed away on Friday after battle with illness . Federer will be defending his title at ATP Sunday . `` The court is great . Serena Williams begins defense of her title in women 's event with win on Sunday .
Roger Federer and Roger Federer among stars to pay tribute to Rafael Nadal . the Madrid Masters 's former president passed away on Friday after battle with illness . Federer will be defending his title at ATP Sunday . Serena Williams begins defense of her title in women 's event with win on Sunday .