Vienna Open: Mensik upsets 8th seed Popyrin in first round
The Czech teen will face the winner of the match between Serb Miomir Kecmanovic and Argentinian Mariano Navone in the next round

Qualifier Jakub Mensik advanced to the second round of the Vienna Open by winning against Australian Alexei Popyrin, the No 8 seed, 7-6 (3), 6-2 at the Wiener Stadthalle on Monday.
Mensik, ranked No 51, will face the winner of the match between Serb Miomir Kecmanovic and Argentinian Mariano Navone next.
Vienna ATP 500, other first-round matches (Wiener Stadthalle, hard, EUR 2,470,310):
- Alexander Zverev (1) beat Joel Josef Schwaerzler (WC): 6-2, 6-2
- Matteo Berrettini beat Marton Fucsovics (Q): 7-5, 6-4
- Flavio Cobolli beat Alejandro Davidovich Fokina: 7-6 (1), 6-3
- Brandon Nakashima vs. Tommy Paul
- Karen Khachanov vs. Thiago Seyboth Wild
- Tomas Machac vs. Fabian Marozsan
- Grigor Dimitrov vs. Zhizhen Zhang
- Kei Nishikori vs. Jack Draper
- Dominic Thiem vs. Luciano Darderi
- Lorenzo Sonego vs. Lorenzo Musetti
- Frances Tiafoe vs. Cameron Norrie
- Quentin Halys vs. Gael Monfils
- Jan-Lennard Struff vs. Alex De Minaur
- Alex Michelsen vs. Marcos Giron
- Miomir Kecmanovic vs. Mariano Navone
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