Stuttgart Open: Zheng books spot in second round
Qinwen Zheng defeated Sorana Cirstea 6-2, 6-3 on Tuesday and will play the winner of the match between Ukrainian Marta Kostyuk and German wildcard Laura Siegemund in the next round

Chinese Qinwen Zheng, the No 5 seed, won against Romanian Sorana Cirstea 6-2, 6-3 to advance to the second round of the Stuttgart Open at the Porsche-Arena on Tuesday.
Zheng, ranked No 7, will face the winner of the match between Ukrainian Marta Kostyuk and German wildcard Laura Siegemund next.
Stuttgart WTA 500, other first-round results (Porsche-Arena, clay, USD 802.237, most recent results first):
- Liudmila Samsonova vs. Anastasia Potapova
- Marta Kostyuk vs. Laura Siegemund
- Ekaterina Alexandrova vs. Ons Jabeur
- Emma Raducanu vs. Angelique Kerber
- Linda Noskova vs. Jelena Ostapenko
- Tatjana Maria vs. Elise Mertens
- Marketa Vondrousova vs. Donna Vekic
- 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