Who was runner-up to Carlos Alcaraz in the 2025 US Open men's singles final?

Jannik Sinner was runner-up to Carlos Alcaraz in the 2025 US Open men’s singles final.

Alcaraz defeated Sinner 6–2, 3–6, 6–1, 6–4 to win his second US Open title. Sinner entered the final as the defending champion, having won the 2024 tournament, but Alcaraz reclaimed the world No. 1 ranking with the victory.

The final was especially notable because Alcaraz and Sinner became the first men’s singles pair in the Open Era to meet in three major finals during the same year. Sinner had also reached all four Grand Slam finals in 2025, a feat achieved by only a small group of Open Era players.

A common mix-up is confusing Sinner with Taylor Fritz, whom Sinner defeated in the 2024 US Open final. Alexander Zverev and Casper Ruud were not Alcaraz’s 2025 final opponent.