As the Boss Open 2025 in Stuttgart progresses into its second day on June 10, players are eager to gain crucial wins on grass ahead of Wimbledon, which is less than three weeks away. After concluding the clay season, participants have limited time to adapt to the grass courts with the primary goal of building momentum before the prestigious Major.
The opening day witnessed all seeded players advancing without surprise. Sixth seed Brandon Nakashima secured a three-set victory over Jacob Fearnley, while eighth seed Jiri Lehecka achieved a straight-sets win against Benjamin Bonzi, setting the tone for a competitive tournament.
Key Singles Matches and Predictions for Day Two
Among the singles players highlighted for the day’s matches, Chun-hsin Tien stands out after an impressive start earlier in the year. He notably qualified and reached the fourth round of the Australian Open, defeating Daniil Medvedev along the way, and later stunned World No. 2 Alexander Zverev at the Acapulco tournament. Despite these highlights, Tien has struggled with consistency, holding a 7-12 record in 2025 and enduring a six-match losing streak before briefly ending it at the Italian Open with a win over Reilly Opelka. His recent form includes a first-round exit at the French Open and a series of losses since.
Yoshihito Nishioka enters this matchup with a balanced 7-7 record for the year and a career-best quarterfinal appearance at the Dallas Open. Though he has suffered losses in his last four ATP Tour matches, including an early departure at the French Open, Nishioka sought early grass-court preparation by participating in a recent Challenger event, albeit with a first-round loss.
Notably, this marks Tien’s debut on grass courts, while Nishioka, although a veteran player, has faced limited success on the surface. Their first career contest remains unpredictable, but Nishioka’s prior experience on grass may prove advantageous.
Predicted winner: Yoshihito Nishioka
Another anticipated singles encounter features Lorenzo Sonego, who advanced to the quarterfinals of the Australian Open earlier in 2025, marking his first Major quarterfinal. Since then, his performances have been less remarkable, ending the clay season with a 1-5 record and exiting the French Open in the first round.
Maxime Halys has experienced a moderately better season, highlighted by a semifinal in Dubai and a third-round showing at the French Open, the only instances where he achieved consecutive match wins this year. Sonego holds a 21-17 record on grass and previously secured his first ATP title on this surface in 2018, also reaching another final in 2021.
Halys’s grass record stands at 6-5, indicating competence but less experience than Sonego, who appears more equipped to tackle the unique demands of grass courts in this matchup.
Predicted winner: Lorenzo Sonego
Taylor Fritz and Jiri Lehecka Target Doubles Success at Boss Open
Taylor Fritz, whose clay season concluded with a disappointing first-round loss at the French Open, received a first-round bye in singles at the Boss Open. However, his focus shifts to doubles, where he plans to compete alongside Jiri Lehecka on Tuesday.
Lehecka, having won his opening singles match against Benjamin Bonzi in a straight-sets victory (6-4, 6-4), partners with Fritz for the doubles competition. Their opponents, Luca Olivetti and Mats Jebens, are pairing for only the second time this year, previously exiting in the opening round at the Miami Open.
Fritz brings experience to the grass courts, having won three titles on this surface and reached the Wimbledon quarterfinals twice. Lehecka, while less seasoned on grass, reached the fourth round of Wimbledon in 2023, complementing Fritz’s prowess. Given the underwhelming recent performances of Olivetti and Jebens individually and as a team, Fritz and Lehecka are favored to advance past their opponents.
Predicted winners: Taylor Fritz and Jiri Lehecka
Other Notable Matchup: Fognini and Moutet Face Off on Grass
Fabio Fognini, nearing the later stages of his professional career, has struggled this season with no victories in four main-draw appearances. Corentin Moutet, meanwhile, holds a 9-10 record in 2025, highlighted by a fourth-round showing at the Italian Open and a second-round loss to Novak Djokovic at the French Open.
Grass courts have never favored Fognini, who never advanced beyond the third round at Wimbledon nor reached any grass-court finals in his prime. Moutet’s grass record is similarly modest at 7-9, showing no marked advantage. Given Fognini’s winless streak this year, Moutet enters the matchup as the favorite.
Predicted winner: Corentin Moutet
Implications for Grass Court Season and Wimbledon Preparation
With Wimbledon approaching rapidly, performances at the Boss Open 2025 provide valuable insight into players’ readiness on grass. Veterans like Taylor Fritz and Lorenzo Sonego aim to reinforce their strengths on this surface, while younger competitors seek breakthroughs ahead of the Major. The doubles pairing of Fritz and Lehecka in particular represents a promising duo, blending experience and recent form that could translate into significant progress in Stuttgart.
For players struggling to find rhythm, such as Fognini and Tien, this tournament serves as a litmus test before the grass season intensifies. Their results here may dictate adjustments or decisions leading into Wimbledon. These early grass court battles in Stuttgart will likely influence seeding considerations and momentum heading into the third Grand Slam of the year.