Stadium: Court 3 Round: 28 Ground: Hardcourt indoor
| Challenger - Hamborg - Herredouble | 2023/10/19 13:20 | Habib/Somani v Istomin/Karlovskiy | 4-6,6-7 |
| Challenger - Hamborg - Herredouble | 2023/10/18 12:55 | Istomin/Karlovskiy v Harris/Stevenson | 7-6,6-3 |
| ITF M25 - Falun - Herredouble | 2023/09/27 16:30 | Istomin/Karlovskiy v Matusevich/Wendelken | 6-7,6-7 |
| ITF M25 - Falun - Herredouble | 2023/09/26 17:25 | Istomin/Karlovskiy v Barrett/Renard | 7-5,6-1 |
| ITF M25 - Astana - Herredouble | 2023/08/01 11:55 | Lomakin/Shalkhimbayev v Istomin/Karlovskiy | 0-6,1-6 |
| Challenger - Astana - Herredouble | 2023/07/27 10:45 | Matsui/Uesugi v Istomin/Karlovskiy | 6-4,7-6 |
| Challenger - Astana - Herredouble | 2023/07/26 11:45 | Istomin/Karlovskiy v Bertrand/Kimhi | 4-6,6-1,10-8 |
| Challenger - Pozoblanco - Herredouble | 2023/07/20 21:35 | Istomin/Karlovskiy v Marrero/Moreno De Alboran | 4-6,7-6,10-12 |
| Challenger - Hamborg - Herredouble | 2023/10/19 15:30 | Novak/Santillan v Reese/Walton | 6-1,7-6 |
| Challenger - Hamborg - Herredouble | 2023/10/17 15:45 | Novak/Santillan v Duran/Larwig | 6-0,6-4 |