Stadium: Court 7 Round: 54 Ground: Clay
| ITF M25 Ust-Kamenogorsk | 2019/08/26 04:00 | Артсиом Черкасу v Клим Козирев | 6-3,6-4 |
| ITF M15 Minsk | 2019/08/19 07:00 | Михаил Йехаян v Клим Козирев | 4-6,6-4,10-5 |
| ITF M15 Almaty | 2019/07/09 04:00 | Клим Козирев v Давид Богатин | 2-6,6-4,10-12 |
| ITF M15 - Анталия | 2019/05/21 07:15 | Anze Arh v Клим Козирев | 6-2,6-0 |
| ITF M15 - Анталия | 2019/05/20 07:45 | Клим Козирев v Fariduni Hamid | 6-4,6-1 |
| ITF M15 - Тбилиси | 2019/04/30 06:00 | Alexander Jhun v Клим Козирев | 6-1,7-6 |
| ITF M15 - Тбилиси | 2019/04/29 11:50 | Клим Козирев v Artsiom Bardzin | 6-1,3-6,10-5 |
| ITF Russia F5 Qual | 2018/08/05 08:00 | Клим Козирев v Andrey Vorobyev | 1-6,6-2,3-6 |
| ITF M15 - Шимкент | 2019/09/09 05:35 | Klim Ivanov v Muhammadmustafo Abdurakhmonov | 3-6,1-6 |
| ITF M25 Namangan | 2019/04/29 06:05 | Klim Ivanov v Иван Денисов | 0-6,3-6 |
| ITF M25 Andijan | 2019/04/22 05:00 | Klim Ivanov v Sharobiddin Abzalov | 1-6,1-6 |
| ITF M25 Shymkent | 2019/04/15 07:25 | Klim Ivanov v Аляксандър Лиаоненка | 0-6,0-6 |
| ITF M25 Shymkent | 2019/04/08 05:30 | Klim Ivanov v Sharobiddin Abzalov | 1-6,1-6 |
| ITF M15 - Анталия | 2019/02/11 07:00 | Klim Ivanov v Майк Урбания | 0-6,0-6 |
| ITF M15 - Анталия | 2019/02/06 09:30 | Херман Казанова v Klim Ivanov | 6-1,6-1 |
| ITF M15 - Анталия | 2019/02/01 09:15 | Saida'lo Saidkarimov v Klim Ivanov | 6-1,6-2 |