Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Vila Real de Santo Antonio | 2023/02/07 12:00 | Alejandro T Alvarez v Redondo Pereira, Sergio | 6-7,3-6 |
| ITF - M25 Vila Real de Santo Antonio | 2023/02/06 10:00 | Valdoleiros, Guilherme v Redondo Pereira, Sergio | 5-7,1-6 |
| ITF M25 Madrid | 2022/11/28 09:00 | Redondo Pereira, Sergio v Jonas Schaer | 6-4,3-6,2-10 |
| ITF M25 Madrid | 2022/11/27 13:00 | Illya Maksymchuk v Redondo Pereira, Sergio | 4-6,7-5,6-10 |
| ITF M15 Madrid | 2022/11/24 07:50 | Redondo Pereira, Sergio v Benjamin Winter Lopez | 1-6,4-6 |
| ITF M25 Madrid | 2022/09/13 10:00 | Nicolas Moreno De Alboran v Redondo Pereira, Sergio | 6-1,6-1 |
| ITF M25 Madrid | 2022/09/12 08:00 | Nicolas Rafael Goldberg Alviani v Redondo Pereira, Sergio | 4-6,6-3,1-10 |
| ITF M25 Madrid | 2022/09/05 07:30 | Redondo Pereira, Sergio v Lautaro Pane | 5-7,1-6 |
| ITF M25 Manacor | 2023/01/28 13:00 | Sebastian Fanselow v Abedallah Shelbayh | 4-6,7-6,5-7 |
| ITF M25 Manacor | 2023/01/27 13:00 | Lopez San Martin, Alvaro v Sebastian Fanselow | 3-6,4-6 |
| ITF M25 Manacor | 2023/01/26 11:00 | Felix Gill v Sebastian Fanselow | 7-5,2-6,3-6 |
| ITF M25 Manacor | 2023/01/25 18:35 | Molino, Javier v Sebastian Fanselow | 4-6,0-6 |
| ITF M25 Manacor | 2023/01/19 12:30 | Daniel Rincon v Sebastian Fanselow | 6-4,6-4 |
| ITF M25 Manacor | 2023/01/18 18:50 | Christian Sigsgaard v Sebastian Fanselow | 3-6,5-7 |
| Challenger - Oeiras | 2023/01/11 16:15 | Dino Prizmic v Sebastian Fanselow | 2-6,6-2,6-2 |
| Challenger - Oeiras | 2023/01/10 17:05 | Sebastian Fanselow v Harold Mayot | 6-2,3-6,6-4 |