Marta Kostyuk defeated Maria Timofeeva at the Australian Open in the round of 16 on hard court with a decisive 6–2, 6–1 victory. As the pre-match favourite at odds of 1.52, Kostyuk delivered an emphatic performance that justified her seeding, dominating both sets against the unseeded Timofeeva, who entered at 2.73. The Ukrainian's comprehensive scoreline reflected her superior control throughout the encounter, allowing her opponent minimal opportunities to establish momentum. Kostyuk's straight-set success underscores her growing threat at the Australian Open and positions her strongly for the quarterfinals.