Japanese qualifier Aoi Ito edged out Italian Jasmine Paolini, the No 7 seed, 2-6, 7-5, 7-6 (5) to move into the third round of the Canadian Open at the IGA Stadium in Montreal on Tuesday evening.
Paolini was leading 6-2, 4-1 and missed one match point at 5-4 in the second set.
Ito, ranked No 105, will face Jessica Bouzas Maneiro next, who defeated Ashlyn Krueger, the No 26 seed. Ahead of her victory, the 21-year-old Japanese won against American qualifier Katie Volynets (6-2, 2-6, 6-2).
Montreal WTA 1000, other second-round results (IGA Stadium, hard, USD 5.152.599, most recent results first):
Sofia Kenin vs. Victoria Mboko
Hanyu Guo vs. Iga Swiatek
Anastasia Pavlyuchenkova vs. Eva Lys
Yuliia Starodubtseva vs. Magdalena Frech
Clara Tauson vs. Lucia Bronzetti
Antonia Ruzic vs. Karolina Muchova
Belinda Bencic vs. Eugenie Bouchard
Catherine McNally vs. Rebecca Sramkova
Madison Keys vs. Laura Siegemund
Maria Sakkari vs. Jessica Pegula
Magda Linette vs. Anastasija Sevastova
Renata Zarazua vs. Jelena Ostapenko
Liudmila Samsonova vs. Naomi Osaka
Kamilla Rakhimova vs. Elina Svitolina
Elise Mertens vs. Anna Kalinskaya
Emma Raducanu vs. Peyton Stearns
Amanda Anisimova vs. Lulu Sun
Maya Joint vs. McCartney Kessler
Suzan Lamens vs. Beatriz Haddad Maia
Coco Gauff vs. Danielle Collins
Elena Rybakina vs. Hailey Baptiste
Ekaterina Alexandrova vs. Lin Zhu
Marie Bouzkova vs. Diana Shnaider: tuesday
Ashlyn Krueger vs. Jessica Bouzas Maneiro: tuesday
Veronika Kudermetova beat Olga Danilovic (29): 6-4, 6-2
Jaqueline Cristian beat Linda Noskova (20): 6-3, 6-4
Mirra Andreeva (4) beat Bianca Andreescu (WC): W/O
Marta Kostyuk (24) beat Marketa Vondrousova: 2-6, 6-3, 6-2
Emma Navarro (8) beat Rebecca Marino (WC): 6-1, 6-2
Dayana Yastremska (30) beat Camila Osorio: 3-6, 7-6 (5), 6-2
Daria Kasatkina (15) beat Anna Blinkova: 6-1, 6-4