Roger Federer to beat Stan Wawrinka. Match of the day. Hard to call as Wawrinka is playing his best tennis in two years. But Federer has looked accomplished and impressive on his return to the Paris clay and he wins to set up a semi-final with Nadal. EPA
Sloane Stephens to beat Johanna Konta. The run of British player Konta has been impressive, but Stephens is looking in good nick and the 2018 runner-up looks on a collision course with Simona Halep for a repeat of last year's final. AFP
Rafael Nadal to defeat Kei Nishikori. The 11-time champion has shown some mortality, dropping a set to David Goffin in the third round, but this should be a 19th successive win at Roland Garros for Nadal. Getty
Petra Martic to defeat Marketa Vondrousova. One of these ladies is going to a grand slam semi-final for the first time. Martic defeated No 2 seed Karolina Pliskova in the third round and she will just edge out teenager Vondrousova. EPA
Roger Federer to beat Stan Wawrinka. Match of the day. Hard to call as Wawrinka is playing his best tennis in two years. But Federer has looked accomplished and impressive on his return to the Paris clay and he wins to set up a semi-final with Nadal. EPA
Sloane Stephens to beat Johanna Konta. The run of British player Konta has been impressive, but Stephens is looking in good nick and the 2018 runner-up looks on a collision course with Simona Halep for a repeat of last year's final. AFP
Rafael Nadal to defeat Kei Nishikori. The 11-time champion has shown some mortality, dropping a set to David Goffin in the third round, but this should be a 19th successive win at Roland Garros for Nadal. Getty
Petra Martic to defeat Marketa Vondrousova. One of these ladies is going to a grand slam semi-final for the first time. Martic defeated No 2 seed Karolina Pliskova in the third round and she will just edge out teenager Vondrousova. EPA
Roger Federer to beat Stan Wawrinka. Match of the day. Hard to call as Wawrinka is playing his best tennis in two years. But Federer has looked accomplished and impressive on his return to the Paris clay and he wins to set up a semi-final with Nadal. EPA
