National Bank Open: Zheng through to second round, defeating Canadian Marino

Chinese Qinwen Zheng edged out Canadian wildcard Rebecca Marino 3-6, 7-6 (5), 6-4 to move into the second round of the National Bank Open at the Aviva Centre in Toronto on Tuesday.

Toronto WTA 1000, other first-round results (Aviva Centre, hard, USD 2.527.250, most recent results first):

• Daria Kasatkina vs. Bianca Andreescu
• Belinda Bencic vs. Tereza Martincova
• Amanda Anisimova vs. Carol Zhao
• Kaia Kanepi vs. Naomi Osaka
• Shuai Zhang vs. Cristina Bucsa
• Camila Giorgi vs. Emma Raducanu
• Veronika Kudermetova vs. Ajla Tomljanovic
• Elise Mertens beat Anna Bondar: 7-6 (2), 6-1
• Coco Gauff (10) beat Madison Brengle (Q): 6-1, 6-3
• Sara Sorribes Tormo vs. Claire Liu: tuesday
• Jil Teichmann beat Venus Williams (WC): 6-2, 6-3
• Alison Riske-Amritraj beat Petra Kvitova: 6-2, 4-6, 6-3
• Yulia Putintseva beat Katherine Sebov (WC): 3-6, 6-2, 7-5
• Leylah Fernandez (13) beat Storm Sanders (Q): 6-4, 6-7 (2), 6-3
• Alize Cornet beat Caroline Garcia: 3-6, 6-3, 6-3
• Asia Muhammad (Q) beat Madison Keys: 7-6 (5), 6-4
• Sloane Stephens beat Sofia Kenin: 6-2, 6-7 (5), 7-5
• Karolina Pliskova (14) beat Barbora Krejcikova: 6-3, 6-4
• Jelena Ostapenko (16) beat Anhelina Kalinina: 6-4, 6-2
• Serena Williams beat Nuria Parrizas Diaz (LL): 6-3, 6-4
• Simona Halep (15) beat Donna Vekic (LL): 6-0, 6-2
• Elena Rybakina beat Marie Bouzkova (Q): 7-5, 6-7 (3), 6-1
• Beatriz Haddad Maia beat Martina Trevisan: 6-2, 2-6, 6-2