Moscow - Seventh-seeded Samantha Stosur advanced to the second round of the Kremlin Cup by beating Kaia Kanepi 6-3, 6-1 Wednesday.
Stosur, coming off her second title this season and fifth of her career, converted four of 11 break opportunities.
A runner-up her last season, Stosur will next play Alize Cornet.
Two-time Grand Slam champion Svetlana Kuznetsova advanced to the quarter-finals by beating Sofia Arvidsson 6-2, 7-5.
Kuznetsova, currently ranked 23rd, overcame an early break in the second set and earned the victory on her third match point.
Results on day four of the ATP and WTA Kremlin Cup on Thursday (x denotes seeding):
Richard Gasquet (FRA x1) bt Evgeny Donskoy (RUS) 6-3, 3-6, 6-1
Teimuraz Gabashvili (RUS) bt Dudi Sela (ISR) 6-1, 6-7 (7/9), 6-1
Ivo Karlovic (CRO) bt Denis Istomin (UZB x5) 6-3, 6-7 (10/12), 7-6 (8/6)
Mikhail Kukushkin (KAZ) bt Aleksandr Dolgopolov (UKR x4) 6-4, 6-4
Samantha Stosur (AUS x7) bt Alize Cornet (FRA) 6-4, 6-1
Ana Ivanovic (SRB) bt Klara Zakopalova (CZE) 6-3, 6-1