Indian shuttlers signed off an impressive campaign at the Russian Open Grand Prix notching up the women's singles as well as the mixed doubles titles at Vladivostok today. Fourth seed Ruthvika Shivani Gadde emerged triumphant inthe women's singles event, beating local favourite EvgeniyaKosetskaya 21-10, 21-13. In the mixed doubles final, N Sikki Reddy and Pranaav Chopra edged past the Russian duo of Vladimir Ivanov and Valeria Sorokina 21-17 21-19 to claim the top honours.India's Siril Verma lost 21-16, 19-21, 10-21 to Malaysia's Zulfadli Zulkiffli in the men's singles final.