In a pulsating showdown that capped off one of the most dominant seasons in modern tennis history, Jannik Sinner outlasted Carlos Alcaraz 7-6(4), 7-5 to successfully defend his Nitto ATP Finals title on Sunday evening in Turin, Italy.
The victory not only extended the Italian’s imperious indoor hard-court winning streak to an astonishing 31 matches—his last defeat on the surface coming against Novak Djokovic in the 2023 final here—but also marked a flawless tournament for Sinner, who went 5-0 without dropping a single set across his two appearances at the prestigious year-end event.
The 24-year-old World No. 2, playing in front of an ecstatic home crowd at the Pala Alpitour, pocketed a record-breaking $5,071,000 champion’s cheque, the largest payout in ATP Finals history.
This triumph cements Sinner’s status as the youngest player to win back-to-back ATP Finals crowns since Roger Federer achieved the feat in 2003-04, when the Swiss maestro was also 23.
Sinner’s overall record at the event now stands at an unbeatable 10-0, boasting the highest win percentage (88.2%) in its storied history, eclipsing even the legendary Ilie Nastase.
This was the sixth final of 2025 pitting Sinner against Alcaraz, the two young titans who have utterly redefined men’s tennis this year.
Between them, they claimed all four Grand Slam titles—Sinner conquering the Australian Open and Wimbledon, while Alcaraz reigned supreme at Roland Garros and the US Open—along with 14 ATP titles in total.
Remarkably, in every tournament both entered, one of them lifted the trophy, turning the season into a personal duel for supremacy.
Alcaraz, who clinched the year-end World No. 1 ranking for the second time in his career with a stellar 71-8 record, entered the match leading their head-to-head 4-1 for the year (10-6 overall).
But Sinner, fresh off a three-month doping ban earlier in the season that he served between the Australian Open and Roland Garros, channeled the partisan atmosphere like a Davis Cup tie to flip the script.
This win avenged his straight-sets loss to Alcaraz in the US Open final just two months prior, where the Spaniard broke Sinner’s serve decisively in the fourth set to dethrone him from the top spot.
The pair’s rivalry, marked by mutual respect and even language lessons—Sinner picking up Spanish, Alcaraz dabbling in Italian—has elevated both players. “Carlos is one of the best returners in the game,” Sinner said post-match. “It was a very, very tough match. I’m very happy.” Alcaraz, ever the showman, echoed the sentiment in his on-court interview: “It’s time to rest, hope you’re gonna be ready for next year because I will be ready for more finals against you!”
The Spaniard, who finished with a tour-leading eight titles, refused to blame his injury for the defeat and is set to join Spain for the Davis Cup Final 8 in Bologna starting November 18, though his participation may hinge on recovery.
From the outset, the final lived up to its billing as a clash between flawless servers on a surface that neutralizes returns.
Sinner, who won the coin toss and elected to receive, faced early pressure as Alcaraz fired a sublime forehand winner down the line to hold to love in his opening service game.
But the Italian’s booming serve—untouched all week—proved impenetrable, setting the tone for a first set that ebbed and flowed with tension.
Disaster nearly struck for Alcaraz around the 6-6 mark, when a medical emergency in the stands halted play for 11 minutes, forcing the Spaniard to cool down at a critical juncture.
Resuming with the score tied, Alcaraz saved a set point with a trademark drop shot, but Sinner’s composure shone through.
In a grueling 17-shot rally at 6-5 in the tiebreak, Sinner unleashed a gorgeous lob to earn another chance, sealing the set 7-4 on a service winner. “From set point down, Sinner has taken his 19th set in a row in this competition!” one observer noted, capturing the electric atmosphere as the crowd erupted.
The second set brought fresh drama. Towards its end—mirroring an earlier hiccup—Alcaraz called for a medical timeout, emerging with heavy strapping on his right hamstring after tweaking it mid-rally.
Undeterred, he channeled his warrior spirit, breaking Sinner’s serve for the first time all tournament in the opening game with a ferocious backhand winner. The Pala Alpitour fell into a stunned hush, but Sinner, backed by roars that rivaled a gladiatorial arena, refused to buckle.
A fortuitous net-cord return sparked the comeback, handing Sinner a break back at 1-1 and igniting the Italian’s trademark finger-to-the-ear celebration, borrowed straight from Alcaraz’s playbook.
From there, Sinner elevated his game, absorbing the Spaniard’s explosive variety with ice-cool baseline exchanges and pinpoint passing shots.
A rifled backhand down the line at 6-5 put him on the brink of victory, and on championship point, Alcaraz’s backhand drifted wide. Sinner collapsed to the court in jubilation, then rose to embrace his rival amid a sea of Italian flags.
Sinner’s 58-6 season record (91% win rate) rivals Alcaraz’s own excellence, underscoring a generational shift where these two have claimed eight straight majors and rendered the rest of the field mere spectators.
For Sinner, who skipped the Davis Cup to rest, 2025 ends on a high note with trophies from the Australian Open, Wimbledon, Beijing, Vienna, Paris, and now a second straight ATP Finals. His indoor dominance—unbeaten since that 2023 loss to Djokovic—positions him as the man to beat heading into 2026.