2026 BOSS Open
Tennis tournament
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The 2026 BOSS Open was a men's tennis tournament played on outdoor grass courts. It was the 48th edition of the Stuttgart Open and an ATP 250 tournament of the 2026 ATP Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 8 June until 14 June 2026.[1]
| 2026 BOSS Open | |
|---|---|
| Date | 8–14 June |
| Edition | 48th |
| Category | ATP 250 |
| Draw | 28S / 16D |
| Surface | Grass |
| Location | Stuttgart, Germany |
| Venue | Tennis Club Weissenhof |
| Champions | |
| Singles | |
 Ben Shelton | |
| Doubles | |
 Yannick Hanfmann / Jan-Lennard Struff | |
Champions
Singles
Ben Shelton def. Taylor Fritz, 6–4, 2–6, 6–4
Doubles
Yannick Hanfmann / Jan-Lennard Struff def. 
Daniil Glinka / 
Stefanos Sakellaridis, 7–6(7–2), 3–6, [11–9]
Singles main draw entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
| USA |
Ben Shelton | 5 | 1 |
| USA |
Taylor Fritz | 9 | 2 |
 KAZ |
Alexander Bublik | 10 | 3 |
 CZE |
Jiří Lehečka | 12 | 4 |
| USA |
|||
| USA |
Frances Tiafoe | 22 | 6 |
 ESP |
Alejandro Davidovich Fokina | 23 | 7 |
 FRA |
Corentin Moutet | 34 | 8 |
- Rankings are as of 25 May 2026.[2]
Other entrants
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Withdrawals
Flavio Cobolli → replaced by 
Giovanni Mpetshi Perricard- Justin Engel → replaced by Quentin Halys
Tomás Martín Etcheverry → replaced by Jan-Lennard Struff
Tomáš Macháč → replaced by 
James Duckworth- Jakub Menšík → replaced by Aleksandar Kovacevic
- Alex Michelsen → replaced by Rinky Hijikata
- Brandon Nakashima → replaced by
Martín Landaluce - Tommy Paul → replaced by
Roman Safiullin - Learner Tien → replaced by Daniel Altmaier
Valentin Vacherot → replaced by Yannick Hanfmann- Alexander Zverev → replaced by
Fábián Marozsán
Doubles main draw entrants
Seeds
| Country | Player | Country | Player | Rank | Seed |
|---|---|---|---|---|---|
 POR |
Francisco Cabral |  CRO |
Nikola Mektić | 39 | 1 |
 BRA |
Orlando Luz | BRA |
Rafael Matos | 63 | 2 |
| GER |
Jakob Schnaitter | GER |
Mark Wallner | 70 | 3 |
| FRA |
Sadio Doumbia |  MEX |
Santiago González | 74 | 4 |
- Rankings are as of 25 May 2026.
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Withdrawals
- Tommy Paul / Ben Shelton → replaced by Daniil Glinka / Stefanos Sakellaridis