Djokovic is France 's Jo-Wilfried Tsonga , who came from one set down to beat Canadian Milos Raonic . Roger Federer and Novak Djokovic to face each other in the quarterfinals at American Wells . The pair of former world No . 1s have contested eight grand slam finals . 10-time grand slam winner Nadal has won 28 of the pair 's 28 matches . Top seed Andy Murray and No . 3 Rafael Nadal also into the last eight .
Roger Federer and Novak Djokovic to face each other in the quarterfinals at American Wells . The pair of former world No . 1s have contested eight grand slam finals . 10-time grand slam winner Nadal has won 28 of the pair 's 28 matches . Top seed Andy Murray and No . 3 Rafael Nadal also into the last eight .