Jannik Sinner vs. Daniel Altmaier Head-to-Head, Prediction and Betting Odds for ATP Vienna Open 2025 Round-1

Winner to face Cobolli or Machac in the R16.

World No. 2 Jannik Sinner returns to tour-level action for a crucial Round of 32 encounter against Daniel Altmaier in the 2025 Erste Bank Open in Vienna. The Italian retained his Six Kings Slam crown last week, and will be hoping for a strong finish to a swashbuckling season. Meanwhile, Altmaier has beaten Sinner in the past – can he do it again? The winner of this match-up will face either Flavio Cobolli or Tomas Machac in the Round of 16. Stay tuned to know all about the betting odds for this clash (via BetMGM).

Jannik Sinner vs Daniel Altmaier Match Preview

Jannik Sinner is playing tennis straight out of a dream today.

Every shot is executed to utter perfection.

🤌🦊

pic.twitter.com/5mZy5ZDAJE
— The Tennis Letter (@TheTennisLetter) October 18, 2025

Jannik Sinner is a serial winner, and one of the most dominant forces in men’s tennis at the moment. The 24-year-old is particularly a beast on the hard courts – which he has proven with successes at the Australian Open, China Open and Six Kings Slam. The top seed in Vienna also won his first Wimbledon trophy this year, beating rival Carlos Alcaraz in the final. A four-time Grand Slam champion, Sinner has a practically flawless 43-6 record in 2025. When it comes to his hard court statistics this season, he has won 80% points on first serve and 92% service games.

That backhand is pure poetry ✍🏻@daniel_altmaier #kinoshitajotennis pic.twitter.com/KZB5GDEzhS
— Tennis TV (@TennisTV) September 26, 2025

Daniel Altmaier is currently ranked just outside the Top-50 at No. 51 in the world. The German sensation reached consecutive quarterfinals at the Rotterdam Open and Open 13 in February. Despite impressing with a Round of 16 appearance at Roland Garros and several other pre-quarterfinal finishes, Altmaier has not been able to make it to the final stages of events. This has left him with a win-loss record of 18-25 this year. The 27-year-old has saved 60% break points and converted 34% break points on hard courts throughout the year.

Jannik Sinner vs Daniel Altmaier Head to Head Record

Jannik Sinner has a 2-1 record against Daniel Altmaier. Their most recent encounter was at the 2025 Shanghai Masters, where the former World No. 1 won in straight sets.

Event	Round	Winner	Score
2025 Shanghai	Round of 64	Jannik Sinner	6-3 6-3
2023 Roland Garros	Round of 64	Daniel Altmaier	6-7(0) 7-6(7) 1-6 7-6(4) 7-5
2022 US Open	Round of 128	Jannik Sinner	5-7 6-2 6-1 3-6 6-1

Jannik Sinner vs Daniel Altmaier Career Comparison

Jannik Sinner	Category	Daniel Altmaier
2	Current Ranking	51
306-86	Career W-L Record	62-107
43-6	YTD W-L Record	18-25
21	Career Titles	0
3	YTD Titles	0
4	Grand Slams	0

Jannik Sinner vs Daniel Altmaier ATP Vienna Open 2025 Prediction

Last week in Riyadh, Jannik Sinner was arguably in the best form of his season. The reigning champion won the Six Kings Slam without dropping a set, and had all bases covered. The return of serve in particular was flawless – he was taking the ball very early and giving his opponents no time to dictate play. Altmaier will need to paint the lines in order to stand any chance against Sinner in Vienna. Yet, the 2023 champion is the firm favorite.

Prediction: Jannik Sinner in straight sets.

Jannik Sinner vs Daniel Altmaier ATP Vienna Open 2025 Betting Odds

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Sinner has dominant odds against Altmaier in the Vienna Open 2025 Round of 32. The Italian has pre-match odds of (1/100), as opposed to (16/1) for the German. According to the implied probability on the money line, Sinner’s chances of advancing to the Round of 16 are currently 93%. Take a look at the odds (as per BetMGM):

Jannik Sinner Win: 1/100
Daniel Altmaier Win: 16/1

Total Games >18.5: 10/11
Total Games <18.5: 41/50
Sinner -7.5 (Game Handicap): 2/1
Altmaier +6.5 (Game Handicap): 7/10
Total Sets <2.5: 1/9
Total Number of Tiebreaks <0.5: 6/25
Total Games By Altmaier >6.5: Evens
Sinner to Win Set-1 By 6-3: 3/1
Total Games in Set-1 >9.5: 29/20

(According to BetMGM: BetMGM offers exclusive promo codes, bonus deals and accurate odds for users upon signing up. Use BetMGM to ace your betting game in all sports!)

(Image Credits: Mike Frey, Imagn Images)

Sankalp Harikrishnan

A passionate sports fan through and through, I am currently pursuing my MA in Global Sports Journalism. I specialise in tennis and football writing at The Playoffs News, and I have prior experience working at EssentiallySports and Sportskeeda. Born and raised in Bengaluru, India, sport was my safe space right from my childhood. After trying my hand at multiple sports and representing my educational institutions in cricket, badminton and table tennis, I found sports media to be my calling.