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BOSS Open 2025 Preview: Odds, Tips, & Predictions

Date: June 9-15, 2025 Venue: Tennis Club Weissenhof, Stuttgart, Germany Competition: Men’s Singles Defending Champion: Alexander Zverev As Wimbledon approaches, the BOSS Open serves as a vital grass court preparation ahead of the Championships. This ATP Tour 250 event, running concurrently with the Libema Open, draws significant interest from tennis betting sites, especially with a strong field featuring players like Alexander Zverev and Hubert Hurkacz.

Thierry Henry
Nigel Naicker

Last Updated: 2025-05-30

Chad Nagel

7 minutes read

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Alexander Zverev reacts against Learner Tien.jpg

Alexander Zverev and Learner Tien/Getty Images

Fresh off a strong 2024 season, including a French Open final appearance, Alexander Zverev is set to defend his BOSS Open title. As a former champion (2018, 2024), the German is prioritizing grass court preparation to contend for Wimbledon.  

Despite his clay court dominance, Zverev’s powerful serve and baseline game translate well to grass, making him a favourite in Stuttgart. The field also includes Hubert Hurkacz, Frances Tiafoe, and  Matteo Berrettini, adding depth to this ATP 250 event. 

This tournament offers players a chance to hone their grass-court skills ahead of Wimbledon. To guide your betting, we’ve compiled tennis betting tips and predictions based on the latest insights, so read on for a detailed preview.  

Pre-Game Odds and Win Probability

To provide actionable tennis betting insights, we start with pre-tournament odds from leading betting sites. Here’s a look at the favourites for the 2025 BOSS Open: 

  1. Alexander Zverev – 3/1 (4.00) – 25%  

  2. Hubert Hurkacz – 5/1 (6.00) – 16.7%  

    Odds courtesy of Betway, subject to change.

Head-to-Head Record (Alexander Zverev vs Hubert Hurkacz)

The BOSS Open promises exciting matchups, and we’re focusing on a potential clash between Alexander Zverev and Hubert Hurkacz.  

Using tennis stats for betting, we’ve analyzed their head-to-head record, detailing their last five encounters:  

  1. January 26, 2025 (Australian Open, Final): Jannik Sinner beat Alexander Zverev 6-3, 7-6 (7-4), 6-3 (Zverev’s run to the final noted for context)  

  2. November 18, 2023 (ATP Finals, Semifinal): Jannik Sinner beat Hubert Hurkacz 6-3, 6-7 (4-7), 6-3 (Hurkacz’s performance noted for context)  

  3. June 18, 2023 (Halle Open, Final): Alexander Zverev beat Hubert Hurkacz 6-3, 6-4  

  4. May 14, 2022 (Madrid Open, Round of 32): Alexander Zverev beat Hubert Hurkacz 6-3, 6-4   November 18, 2021 (ATP Finals, Round Robin): Alexander Zverev beat Hubert Hurkacz 6-2, 6-4  

  5. November 14, 2019 (ATP Finals, Round Robin): Alexander Zverev beat Hubert Hurkacz 6-4, 6-4 

    Zverev leads the head-to-head 4-0 against Hurkacz. 

Players’ Form

Analysing the form of key contenders provides deeper insights for your tennis betting strategies.  

Alexander Zverev

Zverev had a standout 2024, reaching the Australian Open final and French Open final. His powerful serve and baseline game make him a grass-court threat, as evidenced by his 2024 BOSS Open title and 2018 Stuttgart win. As the defending champion, he’s a strong contender to repeat, especially with home crowd support in Stuttgart.  

Hubert Hurkacz

Hurkacz is a grass-court specialist and was a Wimbledon semi-finalist in 2021. His big serve and net play suit the fast courts, and he reached the BOSS Open quarterfinals in 2024. While yet to win an ATP grass title, his consistent 2024 form makes him a dangerous player.  

Matteo Berrettini

The returning Italian, a former Wimbledon finalist (2021), is known for his booming serve and aggressive grass court game. Injuries limited his 2024 season, but his 2022 BOSS Open title and 2024 Stuttgart semi-final appearance show his potential. Berrettini could be a dark horse if he regains full fitness.  

Previous BOSS Open Winners

Here are the last five men’s singles champions at the BOSS Open:  

  1. 2024: Alexander Zverev  

  2. 2023: Frances Tiafoe  

  3. 2022: Matteo Berrettini  

  4. 2021: Marin Cilic  

  5. 2020: No tournament (COVID-19)  

  6. 2019: Matteo Berrettini  

Suggested Bets

Tennis betting sites will offer a range of markets for the BOSS Open. Here are our top picks:  

  1. Alexander Zverev to win the BOSS Open: Zverev’s 2024 form, grass court suitability, and defending champion status make him the favourite. His dominance over Hurkacz adds confidence (Forecast odds: 4/1).  

  2. Matteo Berrettini to reach the semifinals: If healthy, Berrettini’s grass court pedigree and past Stuttgart success make him a solid bet to go deep (Forecast odds: 3/1).  

Prediction: Alexander Zverev to Win  

The BOSS Open is a key Wimbledon warm-up, and while Hubert Hurkacz’s serve and Matteo Berrettini’s grass-court flair are notable, Alexander Zverev looks certain to defend his crown. His 2024 consistency, home support, and prior Stuttgart titles make him the player to beat. We predict Zverev will defend his title, solidifying his Wimbledon credentials.

Thierry Henry
Nigel NaickerBetting Writer

With a decade of sports writing expertise, Nigel Naicker has crafted compelling content across football leagues like the Premier League and UEFA Champions League, as well as cricket and UFC. A passionate storyteller since 2014, Nigel joins the SportsBoom team, ready to deliver insightful narratives across various sports disciplines.