Stadium: Court 10 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Johannesburg | 2021/09/21 07:00 | Menelaos Efstathiou v Preston Brown | 6-2,6-2 |
| ITF M25 Johannesburg | 2021/09/20 07:00 | Guelord Kayombo v Preston Brown | 1-6,2-6 |
| ITF M25 Johannesburg Qual | 2021/09/19 12:00 | Adi Dagan v Preston Brown | 0-6,5-7 |
| ITF M25 Johannesburg | 2021/09/13 09:40 | Preston Brown v Omer Yeshaya | 6-1,6-7,3-10 |
| ITF M25 Johannesburg | 2021/09/12 10:35 | Preston Brown v Logan Stoltz | 6-1,6-1 |
| ITF M25 Decatur | 2021/08/04 16:55 | Preston Brown v Eliot Spizzirri | 0-6,3-6 |
| ITF M25 Decatur | 2021/08/03 15:00 | Preston Brown v Connor Farren | 6-4,6-3 |
| ITF M25 Decatur | 2021/08/02 15:00 | Evan Zhu v Preston Brown | 2-6,2-6 |
| ITF M25 Johannesburg | 2021/09/21 07:00 | Vaughn Hunter v Luc Koenig | 6-4,6-4 |
| ITF M25 Johannesburg | 2021/09/20 07:00 | Luc Koenig v Daniil Savelev | 6-0,6-2 |
| ITF M25 Johannesburg Qual | 2021/09/19 10:35 | Roy Hobbs v Luc Koenig | 6-7,6-7 |
| ITF M25 Johannesburg | 2021/09/15 09:40 | Menelaos Efstathiou v Luc Koenig | 6-2,4-6,6-2 |
| ITF M15 Monastir | 2021/06/07 09:00 | Sungbeen Sim v Luc Koenig | 6-3,6-1 |
| ITF M15 Monastir | 2021/06/06 10:00 | Luc Koenig v Cyril Vandermeersch | 4-6,6-1,10-8 |
| ITF M15 Monastir | 2021/05/23 13:00 | Luc Koenig v Perry Gregg | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2020/11/15 08:00 | Lilian Breut v Luc Koenig | 6-0,6-3 |