Una vista general de la finalClive Brunskill (Getty Images)Federer durante el partidoCARL COURT (AFP)Nadal durante el partidoCARL COURT (AFP)Nadal y Federer se cruzan durante el partidoCARL COURT (AFP)Rafael Nadal se lamenta durante el partidoTOBY MELVILLE (REUTERS)Roger Federer durante el partidoAlastair Grant (AP)Rafael Nadal of Spain returns the ball during his men's singles tennis match against Roger Federer of Switzerland at the ATP World Tour Finals at the O2 Arena in London November 10, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT TENNIS)TOBY MELVILLE (REUTERS)Roger Federer gesticula durante el partidoTOBY MELVILLE (REUTERS)Federer felicita a Nadal al finalizar el partidoDYLAN MARTINEZ (REUTERS)Federer se seca el sudor después del partidoANDY RAIN (EFE)Rafael Nadal antes del partidoTOBY MELVILLE (REUTERS)Roger Federer of Switzerland arrives at the court to play Rafael Nadal of Spain during their ATP World Tour Finals single semifinal tennis match at the O2 Arena in London Sunday, Nov. 10, 2013. (AP Photo/Sang Tan) Sang Tan (AP)El jugador español del Chelsea Juan Mataen el partidoCARL COURT (AFP)Rafael Nadal firma autografos al finalizar el encuentroDYLAN MARTINEZ (REUTERS)
