2018 Swiss Open Gstaad

The 2018 Swiss Open Gstaad (also known as the 2018 J. Safra Sarasin Swiss Open Gstaad for sponsorship reasons) was a men's tennis tournament played on outdoor clay courts. It was the 51st edition of the Swiss Open, and part of the ATP World Tour 250 Series of the 2018 ATP World Tour. It took place at the Roy Emerson Arena in Gstaad, Switzerland, from 23 July through 29 July 2018.

Seeds

 * 1 Rankings are as of 16 July 2018.

Other entrants
The following players received wildcards into the main draw:
 * 🇪🇸 Nicolás Almagro
 * 🇨🇦 Félix Auger-Aliassime
 * Marc-Andrea Hüsler

The following players received entry from the qualifying draw:
 * 🇦🇷 Facundo Bagnis
 * 🇩🇪 Yannick Hanfmann
 * 🇪🇸 Adrián Menéndez Maceiras
 * 🇪🇪 Jürgen Zopp

The following players received entry as lucky losers:
 * Viktor Galović
 * 🇪🇸 Oriol Roca Batalla

Withdrawals

 * Before the tournament
 * 🇷🇺 Evgeny Donskoy → replaced by 🇦🇷 Guido Andreozzi
 * 🇰🇿 Mikhail Kukushkin → replaced by Viktor Galović
 * 🇦🇷 Guido Pella → replaced by 🇪🇸 Oriol Roca Batalla
 * 🇷🇸 Viktor Troicki → replaced by 🇺🇿 Denis Istomin

Seeds

 * 1 Rankings are as of 16 July 2018.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * Adrian Bodmer / Jakub Paul
 * Marc-Andrea Hüsler / Luca Margaroli

The following pair received entry as alternates:
 * 🇦🇷 Guido Andreozzi / 🇪🇸 Jaume Munar

Withdrawals

 * Before the tournament
 * 🇦🇷 Guido Pella

Singles

 * 🇮🇹 Matteo Berrettini def. 🇪🇸 Roberto Bautista Agut, 7–6(11–9), 6–4

Doubles

 * 🇮🇹 Matteo Berrettini / 🇮🇹 Daniele Bracciali def. 🇺🇦 Denys Molchanov / 🇸🇰 Igor Zelenay, 7–6(7–2), 7–6(7–5)