Stuttgart Open: Mertens makes second round, plays Swiatek next

Belgian Elise Mertens beat German wildcard Tatjana Maria 6-1, 4-6, 6-0 to move into the second round of the Stuttgart Open at the Porsche-Arena on Tuesday.

Mertens, ranked No 30, will play top seed Iga Swiatek next.

Stuttgart WTA 500, other first-round results (Porsche-Arena, clay, USD 802.237, most recent results first):

• Emma Raducanu vs. Angelique Kerber
• Liudmila Samsonova vs. Anastasia Potapova
• Marta Kostyuk vs. Laura Siegemund
• Ekaterina Alexandrova vs. Ons Jabeur
• Linda Noskova vs. Jelena Ostapenko
• Marketa Vondrousova (6) beat Donna Vekic: 6-4, 6-3
• Qinwen Zheng (5) beat Sorana Cirstea: 6-2, 6-3
• Jasmine Paolini beat Sara Errani (Q): 6-1, 6-0
• Veronika Kudermetova beat Barbora Krejcikova: 5-7, 6-4, 6-4
• Paula Badosa beat Diana Shnaider (Q): 6-3, 6-4
• Sachia Vickery (Q) beat Aliaksandra Sasnovich (Q): 7-6 (2), 7-5