Jannik Sinner advanced to the semifinals of the Vienna Open after defeating Alexander Bublik in a demanding quarterfinal match. The Italian star faced a strong serving performance from the Kazakh player but managed to stay mentally focused and tactically sharp throughout the contest.
“Tough matchup. Playing QF in a 500 against Sasha is very difficult. I’m very happy. Tried to return as many balls as possible. I felt like he was serving great. I had some chances early in the first set. Couldn’t use them. Tried to stay there mentally. I’m very happy about that and happy to be in the semis again. Very dangerous player. I tried to stay as solid as possible,” Sinner said after the match.
Improvements in serving and tactical variety
Sinner’s serve was particularly effective, with only five points lost on serve during the entire match. When asked about the noticeable improvement, he credited consistent practice and a willingness to adapt under pressure.
“Practice of course. Being also quite brave at times. Trying to understand, with less pace… but trying to change it up. Here today I was serving really well. It’s for sure a shot where I don’t feel as comfortable and as safe yet. But I feel like every day is changing a little bit. Today… Great percentage. I’m very happy,”
he explained.Looking ahead to a tough semifinal
Sinner now prepares to face Alex de Minaur in the semifinal, a player he narrowly defeated in Beijing. He acknowledged the physical and tactical demands of the upcoming match and emphasized the need to maintain focus and intensity.
“Next match will be even more difficult. Alex is playing some great tennis. It was very close in Beijing. It’s gonna be a very tough and physical match. Let’s see what’s coming,” Sinner said.
With momentum on his side and a growing confidence in his serve, Sinner continues to build toward a strong finish in Vienna, aiming to add another title to his impressive 2025 season.
ATP Vienna - Jannik Sinner's projected path
Sinner in Vienna, ranking, and results in 2025
Now the world no.2, the Italian owns a composed 46-6 record in 2025. The Italian is competing in Vienna where he overcame the world no.51 Daniel Altmaier 6-0 6-2, the world no.22 Flavio Cobolli 6-2 7-6(4) and the world no.16 Alexander Bublik 6-4 6-4.
Jannik Sinner will play the world no.7 Alex De Minaur in the semifinal. Their current head to head is 11-0 for Sinner.
The Italian conquered 3 titles in 2025 at the Australian Open, Wimbledon and Beijing. The Italian was the finalist in Rome (Internazionali BNL d’Italia), at the French Open, in Cincinnati (Cincinnati Open) and at the U.S. Open.
Sinner won 22 titles in his career: 11 on hard courts, 1 on clay courts, 8 on indoor courts and 2 on grass courts. (See the list of his titles)
Sinner has scheduled to compete next in Paris (Rolex Paris Masters). He will start the tournament from the main draw that will commence on the 27th of October.
Alexander Bublik in 2025
Ranked world no.16 (career-high), the Kazakhstani played his last match on the 24th of October when he lost to world no.2 Jannik Sinner 6-4 6-4 in the quarter in Vienna (draw).
Until now, during this year Alexander has managed to achieve an overall 44-22 win-loss record. Alexander clinched 5 titles in 2025 in the Turin Challenger, Halle, Gstaad, Kitzbuhel and Hangzhou. The Kazakhstani reached the final in the Phoenix Challenger.
He is also scheduled to play in Paris (Rolex Paris Masters) on the 27th of October and Metz (Moselle Open) on the 2nd of November.
Jannik Sinner and Alexander Bublik fought against each other 8 times. The head to head is 6-2 for Sinner.