Jannik Sinner tops Carlos Alcaraz to retain ATP Finals title, ends 2025 on 15-match win streak

Jannik Sinner cannot be stopped on indoor hard courts, turning up his rivalry with Carlos Alcaraz after emerging as the last man standing in Turin once again.

In a Top 2 battle, the world No. 2 completed a successful ATP Finals title defense without dropping a set, by wrapping up a 7-6 (4), 7-5 victory Sunday evening.

Sinner will go into the 2026 season on a 15-match win streak, having upped his unbeaten indoor run to 31 contests with a statement closing run to the year. He improved to 2-4 against Alcaraz this season, adding to his inaugural Wimbledon triumph.

The first set proved to be a high-level serving battle, with neither competitor facing a break point until the 12^th game. Sinner hung tough from deuce for 2-2 after a medical emergency in the stands delayed play for 12 minutes.

At 4-4, 30-0, Alcaraz pulled up on a shot in the ad corner. After holding, the Spaniard took a medical timeout to receive treatment on his right thigh.

Despite the concerns, Alcaraz generated a set point off the back of his first drop shot of the match (a clean winner) and a follow-up finish at the net. The home favorite denied his rival with an audacious deep second serve out wide, before backing it up with a pair of untouchable rockets.

While Sinner gifted Alcaraz a flubbed reply to a poor drop shot early in the tie-break, the top seed struck successive backhand unforced errors to hand over the mini break. At 5-4, Sinner ended a 17-shot rally with a clear lob winner—and closed out the 79-minute set with another well-placed first serve.

With his right hamstring wrapped, Alcaraz immediately regrouped by becoming the first player to break Sinner during the tournament. But in the sixth game, a stroke of luck went Sinner’s way in getting back on serve. At 30-40, the 24-year-old’s high-flying mishit return landed in and he soon ended the point by exposing Alcaraz’s compromised movement with a drop-shot winner.

The six-time major winner had a chance to earn a re-break in the following game, though overhit a forehand in a stretch of play that saw Sinner work the crowd. After extending the encounter at 4-5, Alcaraz couldn't do the same two games later. At deuce, Sinner's backhand pass drew a netted volley and on his first championship point, the San Candido soaked up his latest winning moment when Alcaraz yanked his crosscourt backhand wide.