Beyond The Numbers
Where does Sinner’s imperious indoor performance rank in history?
Infosys ATP Beyond The Numbers analyses Sinner’s dominance indoors
November 16, 2025
Corinne Dubreuil/ATP Tour
Jannik Sinner owns the best indoor winning percentage among active players.
By Andrew Eichenholz
Jannik Sinner is turning into an indoor titan.
The Italian, who will play Carlos Alcaraz for the Nitto ATP Finals title Sunday, has become dominant with a roof over his head. The second seed’s semi-final against Alex de Minaur was his 30th in a row indoors and he shows no sign of slowing down.
Sinner’s winning streak is already the sixth longest in the Open Era (carpet not included) and dates back to the championship match in Turin two years ago, when he fell to Novak Djokovic. Only John McEnroe, Djokovic, Roger Federer and Ivan Lendl have won more consecutive indoor hard-court matches, with Federer accomplishing the feat twice.
McEnroe owns the longest streak in the Open Era, having emerged victorious in 47 straight indoor hard-court matches from 1978 through 1987. Nobody else has won more than 35 in a row.
Longest Indoor Hard-Court Winning Streaks in Open Era
What is most impressive about Sinner’s streak is not just that he has won, but how convincingly he has done so. The Italian has needed a deciding set in just three of the 30 triumphs he has earned during this streak. In his 27 straight-sets wins, Sinner has needed just six tie-breaks.
At last year’s Nitto ATP Finals, Sinner did not drop more than four games in a set, becoming the first player to win the season finale without losing a set since Lendl in 1986. He has not lost a set or serve through four matches this year in Turin, either.
Since the ATP began tracking service statistics in 1991, Novak Djokovic is the only other player who has made the championship match at the Nitto ATP Finals without losing a service game (2018). Sinner has an idea of why he is successful in such conditions.
“I feel like when someone hits fast, it’s very difficult to change the pace of the ball. So this for sure helps me a lot playing indoors,” Sinner said. “[At] the same time I also try to change the pace because it is essential and it is important, especially with the difference of the players you play against.
“But yeah, you don’t have the wind, you don’t have the sun. You always have the same feeling on the court. It also helps you to feel more and more comfortable, at least from my side.”
Sinner’s indoor performance ranks highly not just among his peers, but among the all-time greats. The San Candido native is 90-21 indoors, giving him the fourth-best winning percentage in the Open Era according to the Infosys ATP Win/Loss Index. Only McEnroe (85.3%), Lendl (83%) and Jimmy Connors (81.6%) have won at a higher rate. He passed Roger Federer (81%) and Bjorn Borg (80.6%) during the Nitto ATP Finals.
No other active player, including Djokovic (80.2%), has won a better percentage of indoor matches. Sinner can continue his imperious indoor play this week but extending his winning streak to 31 and successfully defending his Nitto ATP Finals trophy.
Editor’s Note: This story was originally published after two matches at the 2025 Nitto ATP Finals. It was edited to update statistics leading into the final.
