Tomáš Macháč defeated Stéfanos Tsitsipás 6–4, 3–6, 7–6, 7–6 in the first round of the Australian Open on hard court. Despite entering as the pre-match favourite at 1.59 odds, Macháč was pushed hard by Tsitsipás, who recovered from a set down to force two tiebreaks. The Czech player ultimately prevailed in a tightly contested affair that swung momentum several times, with both players trading the second set before Macháč's composure in the closing stages proved decisive. The result confirms Macháč's status as a rising force on the ATP circuit while Tsitsipás departs early from Melbourne, raising questions about his form heading into the remainder of the season.