Filip Krajinovic defeated Robin Haase 7–6, 6–3, 4–6, 6–2 in the first round of the Australian Open on hard court, confirming his status as the heavy pre-match favourite with odds of 1.23 to Haase's 4.71. The Serbian secured the opening set in a tiebreak before dominating the second, though Haase mounted a brief resistance by taking the third set. Krajinovic reasserted control in the fourth to close out a commanding display and advance to the second round. The victory underscores Krajinovic's solid early-season form heading into the latter stages of the Australian summer.