2026 Open de Sion
Tennis tournament
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The 2026 Open de Sion was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Sion, Switzerland between 17 and 22 August 2026.
| 2026 Open de Sion | |
|---|---|
| Date | 17–22 August |
| Edition | 1st |
| Surface | Clay |
| Location | Sion, Switzerland |
| Champions | |
| Singles | |
 Dominic Stricker | |
| Doubles | |
 Maximilian Neuchrist /  David Poljak | |
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ITA |
Lorenzo Giustino | 198 | 1 |
 ARG |
Juan Manuel La Serna | 286 | 2 |
| AUT |
Sandro Kopp | 289 | 3 |
 FRA |
Calvin Hemery | 318 | 4 |
 GER |
Marvin Möller | 319 | 5 |
| SUI |
Dominic Stricker | 327 | 6 |
 BOL |
Murkel Dellien | 328 | 7 |
| ARG |
Juan Estévez | 329 | 8 |
- 1 Rankings as of 3 August 2026.[1]
Other entrants
The following players received wildcards into the singles main draw:
Luca Stäheli- Dominic Stricker
- Jeffrey von der Schulenburg
The following player received entry into the singles main draw through the College Accelerator programme:
The following player received entry into the singles main draw as an alternate:
Ryan Nijboer
The following players received entry from the qualifying draw:
Gerard Campaña Lee
Thiago Cigarrán
Benjamin Hassan
Àlex Martí Pujolràs
Oleksandr Ovcharenko
Kai Wehnelt
The following player received entry as a lucky loser:
- Luca Wiedenmann
Champions
Singles
- Dominic Stricker def. Benjamin Hassan 6–1, 2–6, 6–2.
Doubles
Maximilian Neuchrist / 
David Poljak def. 
Murkel Dellien / Facundo Mena 6–4, 6–4.