Ukraine’s Marta Kostyuk has duplicated the feat of Croatian Mirjana Lucic-Baroni 20 years ago, when she won the Australian Open girls’ singles title at age 14. Kostyuk, 14, used powerful groundstrokes to outlast top-seeded Rebeka Masarova of Switzerland 7-5, 1-6, 6-4 at Rod Laver Arena on Feb. 25.
ESPN: Ukrainian Marta Kostyuk wins Junior Australian Open
Ukraine's Marta Kostyuk kisses the championship trophy after defeating Rebeka Masarova of Switzerland in the junior girl's singles final on day 13 of the Australian Open tennis tournament in Melbourne on Jan. 28.