beyond numbers
Where does Sinner’s house performance rank historically?
Infosys ATP Beyond The Numbers analyzes Sinner’s indoor dominance
November 16, 2025
Colleen Dubreuil/ATP Tour
Jannik Sinner has the best indoor winning percentage among active players.
Andrew Eikenholz
Jannik Sinner is turning into an indoor giant.
The Italian, who will challenge Carlos Alcaraz for the Nitto ATP Finals title on Sunday, has become a dominant player and has a roof over his head. The second seed’s semifinal matchup against Alex De Minaur was his 30th consecutive indoor match, and he showed no signs of slowing down.
Sinner’s winning streak is already the sixth-longest in the Open era (excluding the carpet) and dates back to the championship match in Turin two years ago, when he lost to Novak Djokovic. Only John McEnroe, Djokovic, Roger Federer and Ivan Lendl have won back-to-back indoor hard-court matches, with Federer accomplishing the feat twice.
McEnroe holds the longest winning streak in the Open era, winning 47 consecutive games on indoor hard courts from 1978 to 1987. No one else has won more than 35 games in a row.
Longest winning streak on indoor hard courts in the Open era
The most impressive thing about Sinner’s winning streak isn’t just that he wins, but that he wins convincingly. In the Italian’s 30-match winning streak, only three required deciding sets. Of his 27 straight-set wins, Sinner only required six tiebreaks.
At last year’s Nitto ATP Finals, Sinner dropped no more than four games in a set, becoming the first player since Lendl in 1986 to win a season final without dropping a set. He also hasn’t dropped a set or serve in four matches in Turin this year.
Since the ATP began tracking serve statistics in 1991, Novak Djokovic is the only player to advance to the championship match at the Nitto ATP Finals without losing serve (2018). Sinner knew why he was successful in this situation.
“I feel like when someone hits the ball fast, it’s hard to change the speed of the ball. So that definitely helps me a lot playing indoors,” Sinner said. “[At] At the same time I try to change the tempo because it is necessary and important, especially when you play against different players.
“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 feel more and more comfortable, at least from my side.”
Sinner’s indoor performance ranks not only among the best among his peers, but also among the greatest players of all time. The San Candido native has an indoor record of 90-21 and his winning percentage ranks fourth in the Open era, according to the Infosys ATP Win-Loss Index. Only McEnroe (85.3%), Lendl (83%) and Jimmy Connors (81.6%) had a higher winning percentage. He surpassed Roger Federer (81%) and Bjorn Borg (80.6%) in the Nitto ATP Finals.
No other active player, including Djokovic (80.2%), has won a higher percentage of indoor matches. Sinner can continue his imperious indoor play this week and extend his winning streak to 31 matches and successfully defend the Nitto ATP Finals trophy.
Editor’s note: This article was originally published after two matches at the 2025 Nitto ATP Finals. It has been edited to update statistics ahead of the finals.
