MOSCOW — Johanna Konta of Britain upset seventh-seeded Belgian Elise Mertens in the first round of the Kremlin Cup on Tuesday.
Making up a 30-place rankings gap to the 14th-ranked Mertens, Konta took full advantage of Mertens’ wayward serving to win 6-3, 7-5.
Konta next plays Australia’s Daria Gavrilova.
French players Kristina Mladenovic and Alize Cornet and Russian veteran Vera Zvonareva all won their first-round matches.
In the first round of the men’s draw, fifth-seeded Nick Kyrgios beat Russian Andrei Rublev 6-3, 4-6, 6-4.
Belarusian qualifier Egor Gerasimov ousted sixth-seeded Damir Dzumhur – last year’s champion in Moscow – 6-1, 6-7 (5), 6-2. Another former champion, Andreas Seppi, beat eighth-seeded Martin Klizan 6-1, 7-6 (6).