Kostyuk triumphs over Svitolina in all-Ukrainian second round in Toronto
No.11 seed Marta Kostyuk defeated Ukrainian compatriot and 2017 champion Elina Svitolina in the second round of the National Bank Open in three sets -- the pair's first meeting since Svitolina ended a 15-year-old Kostyuk's run to the third round of the 2018 Australian Open.
