| ITF M25 Madrid | 2021/09/13 07:00 | Andreu Garcia, Francisco v Carretero, Pablo | 6-2,5-7,13-11 |
| ITF M25 Santander | 2021/08/22 09:00 | Mendoza, Alejandro v Carretero, Pablo | 6-1,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 09:30 | Bianchi, Nicolas v Carretero, Pablo | 0-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 08:40 | Carretero, Pablo v Kalovelonis, Markos | 6-7,1-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/11 08:30 | Carretero, Pablo v Kuzey Cekirge | 4-6,6-0,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 07:00 | Carretero, Pablo v Pereira, Miguel Fernando | 6-7,6-1,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/08 10:00 | Bianchi, Nicolas v Carretero, Pablo | 6-1,0-6,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 13:00 | Daniel Sancho Arbizu v Carretero, Pablo | 3-6,6-3,4-6 |
| ITF M25 Eupen | 2021/09/06 09:15 | Jip Van Assendelft v Weng, Jing Long | 6-4,6-1 |
| ITF M25 Eupen | 2021/09/05 10:30 | Kylian Collignon v Weng, Jing Long | 0-6,1-6 |
| ITF M15 Oldenzaal | 2021/08/15 12:00 | Weng, Jing Long v Karlo Cubelic | 3-6,1-6 |
| ITF M25 Marburg | 2021/07/05 12:25 | Weng, Jing Long v Raphael Collignon | 2-6,6-3,8-10 |
| ITF M25 The Hague | 2021/06/27 08:00 | Guy Den Heijer v Weng, Jing Long | 6-3,6-4 |
| ITF - M15 Antalya | 2021/05/09 07:00 | Weng, Jing Long v Tryakshin, Mark | 2-6,5-7 |
| ITF - M15 Antalya | 2021/05/02 06:00 | Melnic, Vladislav v Weng, Jing Long | 6-4,6-0 |
| ITF M25 Meerbusch | 2021/04/12 09:30 | David Pichler v Weng, Jing Long | 6-2,6-1 |