Stadium: MATCHES Round: 60 Ground: Hardcourt outdoor
| ITF USA F24 | 2018/09/07 21:00 | Battistone, Brian v Kumar, Sameer | 0-6,2-6 |
| ITF USA F31 | 2017/09/15 16:00 | Kumar, Sameer v Johnson, Trevor Allen | 3-6,3-6 |
| ITF Finland F1 | 2017/07/31 09:35 | Kumar, Sameer v Hedman, Alex | 0-6,2-6 |
| ITF Estonia F1 | 2017/07/26 09:40 | Kumar, Sameer v Matias Franco Descotte | 1-6,4-6 |
| ITF Estonia F1 | 2017/07/24 08:00 | Kumar, Sameer v Lebedyn, Alexander | 6-4,6-3 |
| Challenger Winnetka Qual | 2017/07/09 15:00 | Smith, Logan v Kumar, Sameer | 7-5,6-3 |
| ITF USA F1 | 2017/01/04 20:45 | Kumar, Sameer v Soderlund, Carl | 4-6,2-6 |
| ITF USA F1 Qual | 2017/01/02 21:50 | Kumar, Sameer v Schneider, Ronnie | 2-6,6-4,6-1 |
| ITF USA F24 | 2018/09/08 19:30 | Barretto, Dominic v Cozbinov, Alexander | 1-6,2-6 |
| ITF USA F21 | 2018/08/01 17:45 | Dunbar, Jacob v Cozbinov, Alexander | 6-1,6-4 |
| ITF USA F21 Qual | 2018/07/31 15:00 | Maxime Cressy v Cozbinov, Alexander | 6-4,6-4 |
| ITF USA F21 Qual | 2018/07/30 15:00 | Boris Kozlov v Cozbinov, Alexander | 6-4,6-7,2-6 |
| ITF USA F21 Qual | 2018/07/28 17:00 | Matt Kuhar v Cozbinov, Alexander | 4-6,3-6 |
| ITF USA F20 Qual | 2018/07/23 16:50 | Chang, Jonathan v Cozbinov, Alexander | 6-3,6-2 |
| ITF USA F20 Qual | 2018/07/22 15:00 | Huang, Austen v Cozbinov, Alexander | 3-6,2-6 |
| ITF USA F19B Qual | 2018/07/16 17:25 | Lebedev, Alexander v Cozbinov, Alexander | 6-2,6-4 |