Level, 2 wins each over 4 singles meetings since 2023. Last meeting on 07/08/2025 at Cincinnati Open - Cincinnati.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 07/08/2025 | Cincinnati Open - Cincinnati | Round 1 | hard | Baena | 6-4 5-7 6-3 |
| 24/07/2024 | Generali Open - Kitzbuhel | Round 2 | clay | Gaston | 6-2 7-6(5) |
| 15/01/2024 | Australian Open - Melbourne | Round 1 | hard | Gaston | 3-6 2-6 6-3 4-6 |
| 08/09/2023 | Seville Challenger | Semi-final | clay | Baena | 6-7(2) 7-6(7) 6-1 |
| hard | Baena 1 - 1 Gaston |
| clay | Baena 1 - 1 Gaston |
| 2025 | Baena 1 - 0 Gaston |
| 2024 | Baena 0 - 2 Gaston |
| 2023 | Baena 1 - 0 Gaston |
185 wins, 164 losses since 2021 (53.0%).
Last matches: D V D D V
200 wins, 172 losses since 2021 (53.8%).
Last matches: D V V V D
Level, 2 wins each over 4 singles meetings since 2023.
On 07/08/2025, at Cincinnati Open - Cincinnati (Round 1): Roberto Carballes Baena won 6-4 5-7 6-3.