2015 İstanbul Cup – doubles
{'<entity_0>': 'Daria Gavrilova', '<entity_1>': '1'}
[['Daria Gavrilova', 'ranking', '1']]
Svitolina partnered <entity_0> and successfully defended the title, defeating Çağla Büyükakçay and Jelena Janković in the final, 5–7, 6–<entity_1>, .
['tennis event']