PARIS: Results from the eighth day of the French Open on Sunday (x denotes seeding):

Men

4th rd

Stan Wawrinka (SUI x24) bt Stefanos Tsitsipas (GRE x6) 7-6 (8/6), 5-7, 6-4, 3-6, 8-6

Roger Federer (SUI x3) bt Leonardo Mayer (ARG) 6-2, 6-3, 6-3

Kei Nishikori (JPN x7) leads Benoit Paire (FRA) 6-2, 6-7 (8/10), 6-2 -- match suspended due to darkness

Rafael Nadal (ESP x2) bt Juan Ignacio Londero (ARG) 6-2, 6-3, 6-3

Women

4th rd

Sloane Stephens (USA x7) bt Garbine Muguruza (ESP x19) 6-4, 6-3

Johanna Konta (GBR x26) bt Donna Vekic (CRO x23) 6-2, 6-4

Marketa Vondrousova (CZE) bt Anastasija Sevastova (LAT x12) 6-2, 6-0

Petra Martic (CRO x31) bt Kaia Kanepi (EST) 5-7, 6-2, 6-4