Oeiras 6 challenger · ATP
Oeiras 6 challenger 2023
ChallengerHard indoorOeiras, Portugal8 January – 14 January 2023Prize money: 73,000 EUR49 matchesAltitude: 30 mCourt: Medium
Champion Arthur Fils · Final: 6-2 6-4
Final rounds
| Final | Arthur Fils vs Joris De Loore | 6-1 7-6(4) |
| Semifinal | Arthur Fils vs Ricardas Berankis | 7-5 6-3 |
| Semifinal | Joris De Loore vs Pierre-Hugues Herbert | 6-2 6-4 |
| Quarterfinal | Pierre-Hugues Herbert vs Pedro Sousa | 6-1 6-4 |
| Quarterfinal | Ricardas Berankis vs Dino Prizmic | 7-5 7-6(6) |
| Quarterfinal | Arthur Fils vs Maximilian Neuchrist | 6-3 6-1 |
| Quarterfinal | Joris De Loore vs Lorenzo Giustino | 6-2 6-4 |
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