European Open · ATP
European Open 2021
ATP 250Hard indoorAntwerp, Belgium17 October – 24 October 2021Prize money: 584,125 EUR39 matchesAltitude: 9 mCourt: Medium
Champion Jannik Sinner · Final: 6-2 7-5
Final rounds
| Final | Jannik Sinner vs Diego Schwartzman | 6-2 6-2 |
| Semifinal | Diego Schwartzman vs Jenson Brooksby | 6-4 6-0 |
| Semifinal | Jannik Sinner vs Lloyd Harris | 6-2 6-2 |
| Quarterfinal | Jenson Brooksby vs Alejandro Davidovich Fokina | 7-5 6-0 |
| Quarterfinal | Diego Schwartzman vs Brandon Nakashima | 6-4 6-2 |
| Quarterfinal | Jannik Sinner vs Arthur Rinderknech | 6-4 6-2 |
| Quarterfinal | Lloyd Harris vs Marton Fucsovics | 6-2 7-5 |
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