Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF M25 Vale Do Lobo | 2023/11/12 11:00 | Alexandre Ruscica v Peter Sychev | 6-0,6-1 |
| ITF M25 Tavira | 2023/10/15 12:00 | Rafael Giotis v Peter Sychev | 6-0,6-2 |
| ITF M25 Tavira | 2023/10/08 09:00 | Peter Sychev v Stepan Pecak | 6-4,1-6,8-10 |
| ITF M25 Setubal | 2023/09/18 09:00 | Daniel Marincas v Peter Sychev | 6-2,6-2 |
| ITF M25 Sintra | 2023/09/11 13:00 | Alejandro T Alvarez v Peter Sychev | 6-1,6-1 |
| ITF M25 Sintra | 2023/09/06 10:50 | Diego F Flores v Peter Sychev | 6-3,6-1 |
| ITF M25 Idanha-A-Nova | 2023/08/28 11:20 | Daniel Batista v Peter Sychev | 6-2,6-2 |
| ITF M25 Idanha-A-Nova | 2023/08/27 12:00 | Tomas Tenil v Peter Sychev | 1-6,2-6 |
| Challenger Oeiras | 2023/12/31 13:50 | Diogo Marques v Vadym Ursu | 7-5,2-6,3-6 |
| ITF M25 Vale Do Lobo | 2023/11/22 13:10 | Henrique Rocha v Diogo Marques | 6-1,6-3 |
| ITF M25 Vale Do Lobo | 2023/11/13 11:00 | Peter Buldorini v Diogo Marques | 7-5,6-4 |
| ITF M25 Tavira | 2023/10/18 15:25 | Diogo Marques v Pedro Araujo | 6-4,5-7,0-6 |
| ITF M25 Tavira | 2023/10/17 11:30 | Johannes Ingildsen v Diogo Marques | 6-3,4-6,3-10 |
| ITF M25 Tavira | 2023/10/16 08:30 | Diogo Marques v Manuel Almeida | 6-2,6-2 |
| ITF M25 Tavira | 2023/10/15 09:00 | Oscar Lacides v Diogo Marques | 3-6,5-7 |
| ITF M25 Tavira | 2023/10/11 08:30 | Simon Freund v Diogo Marques | 6-3,7-6 |