Stadium: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF - M15 Lubbock | 2021/09/29 15:00 | Omni Kumar v Chad Kissell | 7-5,7-5 |
| ITF M25 Fayetteville | 2021/09/20 17:00 | Chad Kissell v Davide Tortora | 3-6,2-6 |
| ITF - M25 Decatur | 2021/08/02 15:00 | Dane Sweeny v Chad Kissell | 1-6,7-5,10-3 |
| ITF - M25 Champaign | 2021/07/27 16:35 | Tristan Schoolkate v Chad Kissell | 6-2,6-0 |
| ITF - M15 Edwardsville | 2021/07/21 21:10 | Chad Kissell v Felix Corwin | 6-3,5-7,6-7 |
| ITF - M15 Edwardsville | 2021/07/20 14:00 | Chad Kissell v Nicolas Meister | 6-3,6-2 |
| ITF - M15 Edwardsville | 2021/07/19 14:00 | Chad Kissell v John Bernard | 7-6,6-1 |
| ITF - M15 Champaign | 2021/06/21 15:00 | Preston Brown v Chad Kissell | 6-4,6-4 |
| ITF - M15 Tallahassee | 2021/10/28 16:00 | Ryan Shane v Christian Lakoseljac | 6-2,6-4 |
| ITF - M15 Tallahassee | 2021/10/27 14:20 | Christian Lakoseljac v Dusty H. Boyer | 5-7,7-6,7-6 |
| ITF - M15 Tallahassee | 2021/10/26 13:00 | Christian Lakoseljac v Carles Hernandez | 7-6,6-3 |
| ITF - M15 Tallahassee | 2021/10/25 13:00 | Dhruv Sunish v Christian Lakoseljac | 6-7,3-6 |
| ITF M25 Vero Beach | 2021/10/19 16:00 | Reece Falck v Christian Lakoseljac | 6-4,6-4 |
| ITF M25 Vero Beach | 2021/10/18 16:00 | Matthew Foster-Estwick v Christian Lakoseljac | 4-6,6-7 |
| ITF - M15 Naples | 2021/10/13 18:30 | Christian Lakoseljac v Blu Baker | 4-6,3-6 |
| ITF - M15 Naples | 2021/10/12 13:30 | Rubin Statham v Christian Lakoseljac | 6-3,6-0 |