Roger Federer, who has won the US Open singles title five times, would have faced Rafael Nadal had he won his fourth-round match. Clive Brunskill / Getty Images / AFP
Roger Federer, who has won the US Open singles title five times, would have faced Rafael Nadal had he won his fourth-round match. Clive Brunskill / Getty Images / AFP

Roger Federer crashes out, Rafael Nadal through at US Open tennis