Estádio: Center Court Round: 14 Ground: Hardcourt outdoor
| Challenger - Almaty | 2021/06/16 04:00 | Carlos Gimeno Valero v Brayden Schnur | 4-6,6-7 |
| Challenger - Almaty | 2021/06/15 04:00 | Chun Hsin Tseng v Carlos Gimeno Valero | 5-7,6-4,2-6 |
| Challenger - Almaty | 2021/06/08 06:55 | Evan Furness v Carlos Gimeno Valero | 1-6,6-2,6-3 |
| Challenger - Oeiras | 2021/05/28 15:05 | Carlos Gimeno Valero v Holger Rune | 2-6,4-6 |
| Challenger - Oeiras | 2021/05/26 10:00 | Carlos Gimeno Valero v Viktor Galovic | 6-4,6-2 |
| Challenger - Oeiras | 2021/05/25 10:00 | Carlos Gimeno Valero v Vitaliy Sachko | 6-2,6-1 |
| ITF - M25 Vic | 2021/05/23 09:30 | Carlos Gimeno Valero v Pedro Cachin | 1-6,6-3,6-4 |
| ITF - M25 Vic | 2021/05/22 08:30 | Carlos Gimeno Valero v Camilo Ugo Carabelli | 6-3,7-5 |
| Challenger - Pozoblanco | 2021/07/19 15:00 | Michael Geerts v Diego Hidalgo | 7-6,6-3 |
| Challenger - Pozoblanco | 2021/07/18 17:45 | Carlos Matarredona Valor v Diego Hidalgo | 4-6,5-7 |
| Challenger - Amersfoort | 2021/07/12 10:40 | Michael Geerts v Diego Hidalgo | 7-6,6-3 |
| Challenger - Amersfoort | 2021/07/11 14:00 | Guy Den Ouden v Diego Hidalgo | 3-6,6-7 |
| Challenger - Brunsvique | 2021/07/05 09:30 | Diego Hidalgo v Dayne Kelly | 3-6,7-6,3-6 |
| Challenger - Brunsvique | 2021/07/04 10:10 | Igor Sijsling v Diego Hidalgo | 3-6,6-3,4-6 |
| ITF - M25 Tulsa | 2021/06/17 14:00 | Nicolas Kicker v Diego Hidalgo | 6-4,7-5 |
| ITF - M25 Tulsa | 2021/06/16 17:10 | Strong Kirchheimer v Diego Hidalgo | 7-6,2-6,3-6 |