Casper Ruud defeated Jaume Munar 6–3, 7–5, 6–4 in the first round of the Australian Open on hard court. As the clear favourite with odds of 1.39 to Munar's 2.92, Ruud delivered an expected result, controlling the match across all three sets without requiring a fourth. The Norwegian secured his service holds consistently and capitalised on break opportunities, particularly in the second set where he edged out a tight contest. Munar, seeded lower in the draw, struggled to generate the pressure required to trouble Ruud's baseline game and serve. The victory marks a straightforward progression for Ruud into the second round.