The Latest: Marta Kostyuk duplicates feat of Mirjana Lucic

MELBOURNE, Australia (AP) — The Latest on Saturday from the Australian Open (all times local):

Ukraine’s Marta Kostyuk has duplicated the feat of Croatian Mirjana Lucic 20 years ago when she won the Australian Open girls singles title.

Kostyuk, who’s 14, utilized her powerful ground strokes to outlast top-seeded Rebeka Masarova of Switzerland 7-5, 1-6, 6-4 at Rod Laver Arena on Saturday.

Lucic-Baroni, a surprise women’s singles semifinalist this year, was also 14 when she beat Germany’s Marlene…