2019 Swiss Open – Men's Singles

Jirayu La-ongmanee is the defending champion.

Seeds
🇫🇷 Simon Pagenaud 🇷🇺 Pee Saderd 🇧🇪 Metagross 🇷🇸 Volcarona 🇰🇷 Jirayu La-ongmanee Josef Newgarden (Third round) 🇦🇺 Will Power 🇧🇦 Beartic 🇸🇰 Ryan Hunter-Reay 🇯🇵 Apolo Anton Ohno (First round) 🇵🇱 Joey Fatone (Second round) Graham Rahal 🇨🇦 James Hinchcliffe Honchkrow (Third round) 🇪🇸 Mario Lopez 🇸🇪 Heracross

🇦🇿 Decidueye (First round) 🇲🇩 Amoonguss (Second round) 🇮🇹 Marko Manieri 🇷🇴 Vaporeon (Third round) 🇧🇷 Larvesta (Third round) Nidoking (Second round) 🇷🇸 Novak Djokovic 🇪🇸 Rafael Nadal Roger Federer 🇷🇺 Daniil Medvedev 🇦🇹 Dominic Thiem 🇩🇪 Alexander Zverev Stefanos Tsitsipas 🇷🇺 Karen Khachanov 🇪🇸 Roberto Bautista Agut (Third round) 🇮🇹 Matteo Berrettini