Who was runner-up to Jannik Sinner in the 2025 Australian Open men's singles final?

Alexander Zverev was runner-up to Jannik Sinner in the 2025 Australian Open men’s singles final.

Sinner defeated Zverev in straight sets, 6–3, 7–6(4), 6–3, to retain the title in Melbourne. The victory gave Italy’s Sinner his third Grand Slam singles championship and continued his emergence as one of the leading hard-court players of his generation. Zverev reached the final without losing a set in the tournament, but he was unable to convert that run into his first major title.

The result was significant for both players: Sinner successfully defended his 2024 Australian Open crown, while Zverev again finished as a Grand Slam runner-up. He had previously lost the 2020 US Open final to Dominic Thiem and the 2024 French Open final to Carlos Alcaraz. Taylor Fritz, Novak Djokovic and Daniil Medvedev were all prominent contenders, but none faced Sinner in that final.