New York - Reigning Wimbledon champion Garbine Muguruza reached the third round of the US Open for the first time on Wednesday by defeating China's 92nd-ranked Duan Ying-Ying 6-4, 6-0.
The Spanish third seed can become the woman to beat in a seven-way fight for the world number one ranking by reaching the last 16 with a victory over Slovakian 31st seed Magdalena Rybarikova.
Results from day 3 of the US Open on Wednesday (x denotes seeding):
Men
Second round
Sam Querrey (USA x17) bt Dudi Sela (ISR) 6-4, 6-1, 6-4
Radu Albot (MDA) bt Lu Yen-Hsun (TPE) 6-2, 7-6 (9/7), 5-7, 0-6, 7-6 (7/2)
Mischa Zverev (GER x23) bt Benoit Paire (FRA) 6-3, 6-2, 3-6, 6-7 (3/7), 7-5
John Isner (USA x10) bt Hyeon Chung (KOR) 6-3, 6-4, 7-5
Thomas Fabbiano (ITA) bt Jordan Thompson (AUS) 2-6, 6-2, 3-6, 6-4, 6-2
Paolo Lorenzi (ITA) bt Gilles Muller (LUX x19) 6-7 (4/7), 6-3, 7-6 (7/4), 6-3
Kevin Anderson (RSA x28) bt Ernests Gulbis (LAT) 6-3, 7-5, 6-4
Borna Coric (CRO) bt Alexander Zverev (GER x4) 3-6, 7-5, 7-6 (7/1), 7-6 (7/4)
Denis Shapovalov (CAN) bt Jo-Wilfried Tsonga (FRA) 6-4, 6-4, 7-6 (7/3)
Kyle Edmund (GBR) bt Steve Johnson (USA) 7-5, 6-2, 7-6 (7/4)
Nicolas Mahut (FRA) bt Albert Ramos (ESP x20) 4-6, 6-4, 4-6, 6-3, 6-0
Pablo Carreno-Busta (ESP x12) bt Cameron Norrie (GBR) 6-2, 6-4, 6-3
Lucas Pouille (FRA x16) bt Jared Donaldson (USA) 7-5, 6-4, 4-6, 3-6, 6-4
Mikhail Kukushkin (KAZ) bt Evgeny Donskoy (RUS) 6-4, 6-4, 7-5
Diego Schwartzman (ARG x29) bt Janko Tipsarevic (SRB) 6-2, 6-4, 7-5
Marin Cilic (CRO x5) bt Florian Mayer (GER) 6-3, 6-3, 6-3
First round
Taro Daniel (JPN) bt Tommy Paul (USA) 6-1, 4-6, 4-6, 6-2, 6-2
Yuichi Sugita (JPN) bt Geoffrey Blancaneaux (FRA) 6-2, 6-2, 6-0
Leonardo Mayer (ARG) bt Richard Gasquet (FRA x26) 3-6, 6-2, 6-4, 6-2
Stefano Travaglia (ITA) bt Fabio Fognini (ITA x22) 6-4, 7-6 (10/8), 3-6, 6-0
Viktor Troicki (SRB) bt Norbert Gombos (SVK) 3-6, 6-3, 3-6, 6-4, 6-3
Alexandr Dolgopolov (UKR) bt Jan-Lennard Struff (GER) 3-6, 6-3, 6-2, 1-6, 6-3
Tomas Berdych (CZE x15) bt Ryan Harrison (USA) 6-4, 6-2, 7-6 (7/4)
David Goffin (BEL x9) bt Julien Benneteau (FRA) 6-4, 2-6, 6-4, 6-2
Guido Pella (ARG) bt Steve Darcis (BEL) 6-1, 6-2, 6-0
Donald Young (USA) bt Maximilian Marterer (GER) 6-3, 1-6, 6-1, 6-4
Gael Monfils (FRA x18) bt Jeremy Chardy (FRA) 7-6 (8/6), 6-3, 6-4
Damir Dzumhur (BIH) bt Pablo Cuevas (URU x27) 7-5, 7-6 (7/3), 6-1
Cedrik-Marcel Stebe (GER) bt Nicolas Kicker (ARG) 5-7, 6-3, 6-1, 6-1
Andrey Rublev (RUS) bt Aljaz Bedene (GBR) 6-1, 6-4, 6-4
Grigor Dimitrov (BUL x7) bt Vaclav Safranek (CZE) 6-1, 6-4, 6-2
Mikhail Youzhny (RUS) bt Blaz Kavcic (SLO) 6-3, 5-7, 6-4, 6-3
Fernando Verdasco (ESP) bt Vasek Pospisil (CAN) 6-2, 0-0 abandon
Feliciano Lopez (ESP) bt Andrey Kuznetsov (RUS) 6-4, 7-6 (7/4), 6-7 (5/7), 6-2
Philipp Kohlschreiber (GER x33) bt Tim Smyczek (USA) 6-1, 6-4, 6-4
Santiago Giraldo (COL) bt Vincent Millot (FRA) 6-1, 6-0, 4-6, 4-6, 6-4
Malek Jaziri (TUN) bt Thiago Monteiro (BRA) 7-6 (7/5), 4-6, 6-3, 5-7, 6-4
John Millman (AUS) bt Nick Kyrgios (AUS x14) 6-3, 1-6, 6-4, 6-1
Roberto Bautista Agut (ESP x11) bt Andreas Seppi (ITA) 6-2, 4-6, 6-2, 7-6 (7/1)
Dustin Brown (GER) bt Thomaz Belluci (BRA) 6-4, 6-3, 6-2
Adrián Menéndez-Maceiras (ESP) bt Patrick Kypson (USA) 6-4, 7-6 (11/9), 6-1
Juan Martin Del Potro (ARG x24) bt Henri Laaksonen (SUI) 6-4, 7-6 (7/3), 7-6 (7/5)
Adrian Mannarino (FRA x30) bt Ricardas Berankis (LTU) 6-2, 6-4, 6-2
Bjorn Fratangelo (USA) bt Ivo Karlovic (CRO) 7-6 (7/2), 6-4, 3-6, 7-6 (7/4)
Taylor Fritz (USA) bt Marcos Baghdatis (CYP) 6-4, 6-4, 6-3
Dominic Thiem (AUT x6) bt Alex De Minaur (AUS) 6-4, 6-1, 6-1
Women
Second round
Ekaterina Makarova (RUS) bt Caroline Wozniacki (DEN x5) 6-2, 6-7 (5/7), 6-1
Carla Suárez Navarro (ESP) bt Mirjana Lucic-Baroni (CRO x29) 4-6, 7-6 (7/4), 6-2
Maria Sakkari (GRE) bt Arina Rodionova (AUS) 7-5, 6-3
Venus Williams (USA x9) bt Ocane Dodin (FRA) 7-5, 6-4
Petra Kvitova (CZE x13) bt Alize Cornet (FRA) 6-1, 6-2
Caroline Garcia (FRA x18) bt Ekaterina Alexandrova (RUS) 4-6, 6-3, 6-0
Magdalena Rybarikova (SVK x31) bt Kristyna Pliskova(CZE) 7-6 (7/4), 7-6 (7/3)
Garbine Muguruza (ESP x3) bt Ying-Ying Duan (CHN) 6-4, 6-0
Aleksandra Krunic (SRB) bt Ajla Tomljanovic (AUS) 6-3, 6-2
Julia Goerges (GER x30) bt Saisai Zheng (CHN) 6-2, 6-1
Ashleigh Barty (AUS) bt Aliaksandra Sasnovich (BLR) 6-1, 7-6 (9/7)
Sloane Stephens (USA) bt Dominika Cibulkova (SVK x11) 6-2, 5-7, 6-3
Anastasija Sevastova (LAT x16) bt Kateryna Kozlova (UKR) 6-4, 6-4
Donna Vekic (CRO) bt Peng Shuai (CHN x22) 6-0, 6-2
Sofia Kenin (USA) bt Sachia Vickery (USA) 6-3, 4-6, 7-6 (7/0)
Maria Sharapova (RUS) bt Timea Babos (HUN) 6-7 (4/7), 6-4, 6-1
First round
Nicole Gibbs (USA) bt Vernica Cepede (PAR) 6-0, 1-6, 6-1
Risa Ozaki (JPN) bt Danielle Lao (USA) 6-3, 6-7 (5/7), 7-6 (7/5)
Zhang Shuai (CHN x27) bt Sabine Lisicki (GER) 6-7 (4/7), 6-3, 6-0
Jennifer Brady (USA) bt Andrea Petkovic (GER) 6-4, 3-6, 6-1
Ana Bogdan (ROM) bt Taylor Townsend (USA) 6-4, 4-6, 6-3
Monica Niculescu (ROM) bt Kristina Mladenovic (FRA x14) 6-3, 6-2
Agnieszka Radwanska (POL x10) bt Petra Martic (CRO) 6-4, 7-6 (7/3)
Yulia Putintseva (KAZ) bt Sofya Zhuk (RUS) 7-6 (7/3), 6-3
Ons Jabeur (TUN) bt Brienne Minor (USA) 6-1, 7-5
Coco Vandeweghe (USA x20) bt Alison Riske (USA) 2-6, 6-3, 6-4
Lucie Safarova (CZE) bt Anett Kontaveit (EST x26) 6-7 (5/7), 6-1, 6-4
Nao Hibino (JPN) bt Catherine Bellis (USA) 6-3, 4-6, 7-5
Kurumi Nara (JPN) bt Sara Sorribes (ESP) 6-1, 6-2
Svetlana Kuznetsova (RUS x8) bt Markta Vondrousov (CZE) 4-6, 6-4, 7-6 (7/2)
Elina Svitolina (UKR x4) bt Katerina Siniakova (CZE) 6-0, 6-7 (5/7), 6-3
Evgeniya Rodina (RUS) bt Eugenie Bouchard (CAN) 7-6 (7/2), 6-1
Shelby Rogers (USA) bt Kayla Day (USA) 6-2, 4-6, 6-4
Daria Gavrilova (AUS x25) bt Alexandra Kiick (USA) 6-2, 6-1
Elena Vesnina (RUS x17) bt Anna Blinkova (RUS) 6-1, 6-3
Kirsten Flipkens (BEL) bt Madison Brengle (USA) 6-2, 6-3
Tatjana Maria (GER) bt Ashley Kratzer (USA) 6-1, 6-1
Darya Kasatkina (RUS) bt Wang Qiang (CHN) 6-7 (7/9), 6-2, 6-3
Christina McHale (USA) bt Anastasia Pavlyuchenkova (RUS x19) 3-6, 6-3, 6-2
Kaia Kanepi (EST) bt Francesca Schiavone (ITA) 0-6, 6-4, 6-2
Denisa Allertova (CZE) bt Rebecca Peterson (SWE) 6-2, 7-6 (7/5)