2025 Swiss Indoors
The 2025 Swiss Indoors Basel was a men's tennis tournament played on indoor hard courts. It was the 54th edition of the event, and part of the ATP 500 tournaments of the 2025 ATP Tour. It was held at the St. Jakobshalle in Basel, Switzerland, from 20 to 26 October 2025.
João Fonseca won the final against Alejandro Davidovich Fokina 6:3, 6:4. Fonseca thus becomes the second teenager after Jim Courier to win the Swiss Indoors. In doubles, the pairing of Marcel Granollers and Horacio Zeballos triumphed, defeating Adam Pavlasek and Jan Zielinski 6:2, 7:5 in the final.
Finals
Singles
João Fonseca def. Alejandro Davidovich Fokina, 6–3, 6–4Doubles
Marcel Granollers / Horacio Zeballos def. Adam Pavlásek / Jan Zieliński, 6–2, 7–5Singles main draw entrants
Seeds
- Rankings are as of 13 October 2025
Other entrants
The following players received wildcards into the singles main draw:The following player received entry using a protected ranking:
The following player using a special exempt:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Withdrawals
- Zizou Bergs → replaced by David Goffin
- Benjamin Bonzi → replaced by Quentin Halys
- Arthur Fils → replaced by Jenson Brooksby
- Arthur Rinderknech → replaced by Valentin Royer
- Holger Rune → replaced by Botic van de Zandschulp
Doubles main draw entrants
Seeds
1 Rankings as of 13 October 2025Other entrants
The following pairs received wildcards into the doubles main draw:The following pair received entry from the qualifying draw: