Belarusian Aryna Sabalenka, the top seed, won against Swiss Rebeka Masarova 7-5, 6-1 to move into the second round of the US Open at the USTA Billie Jean King National Tennis Center in New York on Sunday evening.
Sabalenka, ranked No 1, will face Russian Polina Kudermetova next.
New York (Grand Slam), other first-round results (USTA Billie Jean King National Tennis Center, hard, USD 90.000.000, most recent results first):
Ajla Tomljanovic vs. Coco Gauff
Greet Minnen vs. Naomi Osaka
Hailey Baptiste vs. Katerina Siniakova
Donna Vekic vs. Jessica Bouzas Maneiro
Anastasia Zakharova vs. Elina Avanesyan
Sorana Cirstea vs. Solana Sierra
Ashlyn Krueger vs. Sofia Kenin
Francesca Jones vs. Eva Lys
Laura Siegemund vs. Diana Shnaider
Ekaterina Alexandrova vs. Anastasija Sevastova
Lois Boisson vs. Viktorija Golubic
Danielle Collins vs. Jaqueline Cristian
Amanda Anisimova vs. Kimberly Birrell
Linda Noskova vs. Dalma Galfi
Caroline Dolehide vs. Xinyu Wang
Emiliana Arango vs. Iga Swiatek
Suzan Lamens vs. Valerie Glozman
Beatriz Haddad Maia vs. Sonay Kartal
Victoria Jimenez Kasintseva vs. Maya Joint
Katie Boulter vs. Marta Kostyuk
Alycia Parks vs. Mirra Andreeva
Venus Williams vs. Karolina Muchova
Anna Bondar vs. Elina Svitolina
Darja Semenistaja vs. Peyton Stearns
Magdalena Frech vs. Talia Gibson
Katie Volynets vs. Zeynep Sonmez
Maria Sakkari vs. Tatjana Maria
Ann Li vs. Rebecca Sramkova
Elsa Jacquemot vs. Marie Bouzkova
Daria Kasatkina vs. Elena-Gabriela Ruse
Taylor Townsend vs. Antonia Ruzic
Elena Rybakina vs. Julieta Pareja
Cristina Bucsa vs. Claire Liu
Anna Kalinskaya vs. Clervie Ngounoue
Kamilla Rakhimova vs. Caroline Garcia
Aliaksandra Sasnovich vs. Iva Jovic
Elise Mertens vs. Alyssa Ahn
Madison Keys vs. Renata Zarazua
Yulia Putintseva vs. Elisabetta Cocciaretto
Petra Kvitova vs. Diane Parry
Barbora Krejcikova vs. Victoria Mboko
Leolia Jeanjean vs. Priscilla Hon
Liudmila Samsonova vs. Yue Yuan
Anastasia Pavlyuchenkova vs. Dayana Yastremska
Jessica Pegula vs. Mayar Sherif
Destanee Aiava vs. Jasmine Paolini
Shuai Zhang vs. Belinda Bencic
Victoria Azarenka vs. Hina Inoue
Yuliia Starodubtseva vs. Anna Blinkova
Anastasia Potapova vs. Lin Zhu
Lulu Sun vs. Camila Osorio
Jelena Ostapenko vs. Xiyu Wang
Emma Navarro vs. Yafan Wang
Jil Teichmann vs. Catherine McNally: sunday
Alexandra Eala vs. Clara Tauson: sunday
Moyuka Uchijima vs. Olga Danilovic: sunday
Janice Tjen (Q) beat Veronika Kudermetova (24): 6-4, 4-6, 6-4
Leylah Fernandez (31) beat Rebecca Marino (Q): 6-2, 6-1
Marketa Vondrousova beat Oksana Selekhmeteva (Q): 6-3, 7-6 (3)
Emma Raducanu beat Ena Shibahara (Q): 6-1, 6-2
Polina Kudermetova beat Nuria Parrizas Diaz: 2-2 ret.
McCartney Kessler (32) beat Magda Linette: 7-5, 7-5
Tereza Valentova (Q) beat Lucia Bronzetti: 6-3, 3-6, 6-4