Jannik Sinner capped off a stellar week in Saudi Arabia by defeating Carlos Alcaraz 6-2, 6-4 in the final of the Six Kings Slam exhibition. The Italian’s performance was anchored by a vastly improved serve, winning over 80 per cent of his service points and never facing a break point throughout the match. The win marked Sinner’s second consecutive Six Kings Slam title and reinforced his growing edge in high-stakes encounters.
Alcaraz praises Sinner’s serving evolution
Carlos Alcaraz was quick to acknowledge the quality of Sinner’s game, particularly his serve. “He played great today. He didn’t let me get a good rhythm,” Alcaraz said. “He was improving a lot, the serve, and I could feel it. No break points today, which for me is something weird. I’m used to at least one break point in the match. But when he’s serving really good it’s really difficult. I couldn’t find a solution today, so I think he deserved it.”
Alcaraz, who had beaten Sinner in the US Open final just weeks earlier, struggled to impose his usual aggressive baseline game as Sinner kept him off balance with precise placement and pace.
Serving hours pay off for Sinner
Sinner’s serving prowess was also evident in his semi-final win over Novak Djokovic, where he again won over 80 per cent of his service points. After that match, Sinner revealed the work behind the scenes that led to his improvement. “We worked a lot in the past month, we’re serving hours and hours,” he said.
The Italian’s ability to back up his groundstrokes with a reliable and powerful serve has added a new dimension to his game, making him a more complete threat on all surfaces.
A rising rivalry
While the Six Kings Slam is an exhibition and does not affect rankings or official head-to-head records, the intensity of the matches and the level of play suggest that the Sinner-Alcaraz rivalry is becoming one of the most compelling in tennis. With both players under 25 and already Grand Slam champions, their battles are likely to shape the sport’s future.
ATP Vienna - Jannik Sinner's projected path
Jannik Sinner in 2025
Now the world no.2, the Italian played his last match on the 5th of October when he had to retire when playing against world no.27 Tallon Griekspoor in the 3rd
round and the scoreline was 6-7(3) 7-5 3-2 .Currently, during this season Sinner has a composed 43-6 match record. The Italian conquered 3 titles in 2025 at the Australian Open, Wimbledon and Beijing. Jannik reached the final in Rome, French Open, Cincinnati and U.S. Open.
He is also scheduled to play in Paris (Rolex Paris Masters) after Vienna. The main draw will start on the 20th of October.
Carlos Alcaraz in 2025
At the moment ranked no.1, Carlos played his last match on the 30th of September when he defeated world no.4 Taylor Fritz 6-4 6-4 in the final in Tokyo to win his 25th career title.
At the moment, during this season Alcaraz achieved a 67-7 win-loss record. Alcaraz conquered 8 titles in 2025 in Rotterdam, Monte-Carlo, Rome, French Open, London, Cincinnati, U.S. Open and Tokyo. Carlos was the runner-up in Barcelona and Wimbledon.
He is also scheduled to play in Paris (Rolex Paris Masters). The main draw will start on the 27th of October.
Jannik Sinner and Carlos Alcaraz faced off 16 times. Their current head to head is 11-5 for Alcaraz.