Jannik Sinner defeated Félix Auger-Aliassime 6–1, 3–6, 6–3, 6–4 in the US Open semi-final on hard court, confirming his status as heavy pre-match favourite with odds of 1.05 to Auger-Aliassime's 15.13. Sinner dominated the opening set, breaking serve early and maintaining control, though Auger-Aliassime responded with a composed second set to level the match. The Italian reasserted his authority thereafter, winning the third and fourth sets with consistent pressure and precision to advance to the final. The result underscores Sinner's current dominance on hard courts and his trajectory towards a second Grand Slam title of 2025.