Stadium: Court 3 Round: 29 Ground: Clay
| ITF - M25 Santander | 2023/08/25 09:30 | Imanol L Morillo v Vilius Gaubas | 3-6,7-5,2-6 |
| ITF - M25 Santander | 2023/08/24 10:00 | Sergi Perez Contri v Vilius Gaubas | 2-6,7-5,1-6 |
| ITF - M25 Santander | 2023/08/23 14:15 | Julio Cesar Porras v Vilius Gaubas | 2-6,4-6 |
| ITF - M25 Santander | 2023/08/22 13:00 | Kane Bonsach Ganley v Vilius Gaubas | 2-6,3-6 |
| ITF - M25 Lodz | 2023/08/12 07:55 | Daniel Paty v Vilius Gaubas | 6-2,6-2 |
| ITF - M25 Lodz | 2023/08/11 10:15 | Patrick Kaukovalta v Vilius Gaubas | 2-6,2-6 |
| ITF - M25 Lodz | 2023/08/09 08:00 | Marcel Kamrowski v Vilius Gaubas | 3-6,6-3,5-7 |
| ITF - M15 Xativa | 2023/08/06 16:55 | Carlos Lopez Montagud v Vilius Gaubas | 6-4,7-6 |
| ITF - M25 Santander | 2023/08/25 09:30 | Svyatoslav Gulin v Benjamin Winter Lopez | 7-5,6-0 |
| ITF - M25 Santander | 2023/08/24 13:30 | Ryan Nijboer v Svyatoslav Gulin | 6-3,6-7,3-6 |
| ITF - M25 Santander | 2023/08/23 12:20 | Svyatoslav Gulin v Fnu Nidunjianzan | 6-4,3-6,6-0 |
| ITF - M25 Santander | 2023/08/22 07:55 | Alejo Sanchez Quilez v Svyatoslav Gulin | 6-1,2-6,4-6 |
| ITF - M15 Kottingbrunn | 2023/08/17 08:00 | Svyatoslav Gulin v Joel Schwaerzler | 1-6,1-6 |
| ITF - M15 Kottingbrunn | 2023/08/15 08:00 | Sebastian Prechtel v Svyatoslav Gulin | 3-6,6-7 |
| ITF - M15 Uslar | 2023/07/18 10:00 | Sebastian Prechtel v Svyatoslav Gulin | 6-1,6-3 |
| ITF - M25 Kassel | 2023/07/14 14:10 | Svyatoslav Gulin v Andrew Paulson | 2-6,2-6 |