Stadium: Court 6 Round: 26 Ground: Clay
| ITF M25 Telfs | 2023/07/19 10:00 | Daniel Siniakov v Timofey Stepanov | 4-6,6-3,6-0 |
| ITF M25 Kassel | 2023/07/12 11:25 | Daniel Siniakov v Facundo Yunis | 4-6,1-6 |
| ITF M25 Kassel | 2023/07/11 09:30 | Daniel Siniakov v Taym Alazmeh | 6-3,7-6 |
| ITF M25 Kassel | 2023/07/10 08:00 | Daniel Siniakov v Vojtech Mares | 7-5,6-4 |
| ITF M25 Marburg | 2023/07/04 15:00 | Daniel Siniakov v Max Wiskandt | 2-6,4-6 |
| Challenger Prostejov | 2023/06/04 13:00 | Roman Andres Burruchaga v Daniel Siniakov | 7-5,7-5 |
| ITF M25 Jablonec Nad Nisou | 2023/05/31 11:50 | Daniel Siniakov v Stuart Parker | 0-6,2-6 |
| ITF M25 Most | 2023/05/24 12:00 | Patrik Rikl v Daniel Siniakov | 6-3,4-6,6-3 |
| ITF M25 Telfs | 2023/07/18 08:30 | Daniel Paty v Juan Bautista Otegui | 3-6,3-6 |
| Challenger Iasi | 2023/07/11 12:10 | Michael Vrbensky v Juan Bautista Otegui | 6-2,6-3 |
| Challenger Iasi | 2023/07/10 07:00 | Michael Vrbensky v Juan Bautista Otegui | 7-6,4-6,3-6 |
| Challenger Iasi | 2023/07/09 07:30 | Matei Cristian Onofrei v Juan Bautista Otegui | 2-6,1-6 |
| ITF M25 Marburg | 2023/07/05 10:20 | Daniel Salazar v Juan Bautista Otegui | 6-4,6-3 |
| Challenger Modena | 2023/06/25 08:00 | Juan Bautista Otegui v Remy Bertola | 4-6,6-3,1-6 |
| Challenger Blois | 2023/06/19 12:25 | Alex Michelsen v Juan Bautista Otegui | 5-7,6-3,6-3 |
| Challenger Blois | 2023/06/18 11:40 | Arklon H D Pino v Juan Bautista Otegui | 6-2,3-6,6-7 |