Andy Murray and Stan Wawrinka could face each other in the semi-finals later this year
Murray beat Juan Martin del Potro 7-6, 7-5, 6-0 on Saturday, his best performance on clay in 2017, which has been a difficult year for the new world No1.
Several high-profile defeats to players ranked well below him have left him struggling for form and the Scot has also had to deal with an elbow injury and a bout of illness.
However, Murray believes “you do not become a bad player overnight” and will face either Fernando Verdasco or Kei Nishikori if he can beat 21-year-old Russian Karen Khachanov.
Stan Wawrinka meanwhile faces Gael Monfils who came through an all-French third-round clash with Richard Gasquet – the victor of Kevin Anderson and Marin Cilic awaits.
French Open 2017 results on Day 9 – men’s singles
French Open prize money Fri, May 26, 2017
How much are players set to win at this year's French Open? As with all the Majors, men and women earn equal prize money at Roland Garros
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French Open 2017 results on Day 9 – women’s singles
3-Simona Halep (Romania) beat 21-Carla Suarez Navarro (Spain) 6-1 6-1
French Open 2017 schedule on Day 9
Court Philippe Chatrier
Suarez Navarro v Halep
Murray v Khachanov
Wawrinka v Monfils
Garcia v Cornet
Court Suzanne Lenglen
Svitolina v Martic
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Verdasco v Nishikori
Anderson v Cilic
Cepede Royg v Pliskova
Ashleigh Barty/Casey Dellacqua v Daria Gavrilova/Anastasia Pavlyuchenkova
Andreja Klepac/Maria Jose Martinez Sanchez v Ekaterina Makarova/Elena Vesnina
Bethanie Mattek-Sands/Lucie Safarova v Svetlana Kuznetsova/Kristina Mladenovic
Jamie Murray/Bruno Soares v Santiago Gonzalez/Donald Young
Miomir Kecmanovic v Jaimee Floyd Angele
Lucie Hradecka/Katerina Siniakova v Hao-Ching Chan/Barbora Krejcikova
Juan Sebastian Cabal/Robert Farah v Julio Peralta/Horacio Zeballos
Lucie Hradecka/Marcin Matkowski v Casey Dellacqua/Rajeev Ram
Gabriela Dabrowski/Rohan Bopanna v Sania Mirza/Ivan Dodig