Madrid - World No 1 Rafael Nadal took his clay court winning streak to 48 successive sets with a 6-3, 6-1 win over Gael Monfils in his Madrid Masters opener on Wednesday.
Nadal, who has already claimed an 11th title in Monte Carlo and Barcelona this season, also claimed his 20th win in a row on clay.
He will next face Diego Schwartzman of Argentina, who beat Spaniard Feliciano Lopez 7-5, 2-6, 6-2.
A win in that match will take Nadal past John McEnroe's record of 49 straight sets won on any surface.
Results from the ATP/WTA Madrid Open on Wednesday (x denotes seeding):
Men
Second round
Rafael Nadal (ESP x1) bt Gael Monfils (FRA) 6-3, 6-1
Diego Schwartzman (ARG x13) bt Feliciano Lopez (ESP) 7-5, 2-6, 6-2
Borna Coric (CRO) bt Jan-Lennard Struff (GER) 6-0, 6-2
Dominic Thiem (AUT x5) bt Federico Del Bonis (ARG) 4-6, 6-3, 7-5
Philipp Kohlschreiber (GER) bt Roberto Bautista Agut (ESP x11) 6-3, 4-6, 7-5
Kevin Anderson (RSA x6) bt Mikhail Kukushkin (KAZ) 5-7, 7-6 (7/3), 6-2
David Goffin (BEL x8) bt Robin Haase (NED) 7-5, 6-3
Kyle Edmund (GBR) bt Novak Djokovic (SRB x10) 6-3, 2-6, 6-3
John Isner (USA x7) bt Ryan Harrison (USA) 7-6 (7/1), 7-6 (9/7)
Pablo Cuevas (URU) bt Albert Ramos Vinolas (ESP) 6-1, 6-7 (2/7), 6-2
Leonardo Mayer (ARG) bt Fernando Verdasco (ESP) 6-2, 6-1
Women
Third round
Simona Halep (ROM x1) bt Kristyna Pliskova (CZE) 6-1, 6-4
Karolína Pliskova (CZE x6) bt Sloane Stephens (USA x9) 6-2, 6-3
Darya Kasatkina (RUS x14) bt Garbiñe Muguruza (ESP x3) 6-2, 4-6, 6-3
Petra Kvitova (CZE x10) bt Anett Kontaveit (EST) 6-7 (4/7), 6-3, 6-3
Caroline Garcia (FRA x7) bt Julia Goerges (GER x11) 6-2, 6-4
Carla Suárez (ESP) bt Bernarda Pera (USA) 2-6, 6-2, 6-4
Maria Sharapova (RUS) bt Kristina Mladenovic (FRA) 6-3, 6-4
Kiki Bertens (NED) bt Caroline Wozniacki (DEN x2) 6-2, 6-2