Swiss Open · ATP
Swiss Open 2021
ATP 250ClayGstaad, Switzerland17 July – 25 July 2021Prize money: 481,270 EUR39 matchesAltitude: 1,054 mCourt: Medium-fast
Champion Casper Ruud · Final: 6-4 1-6 7-6(11)
Final rounds
| Final | Casper Ruud vs Hugo Gaston | 6-3 6-2 |
| Semifinal | Casper Ruud vs Vit Kopriva | 6-3 6-0 |
| Semifinal | Hugo Gaston vs Laslo Djere | 3-6 6-3 6-3 |
| Quarterfinal | Casper Ruud vs Benoit Paire | 6-2 5-7 6-3 |
| Quarterfinal | Vit Kopriva vs Mikael Ymer | 6-1 6-0 |
| Quarterfinal | Laslo Djere vs Arthur Rinderknech | 6-4 6-7(5) 6-4 |
| Quarterfinal | Hugo Gaston vs Cristian Garin | 6-4 1-6 7-6(11) |
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