Stadium: Court 5 Round: 27 Ground: Hardcourt outdoor
| ITF M25 Pretoria | 2021/09/30 07:30 | Benjamin Lock v Prechtel, Sebastian | 6-2,3-6,5-7 |
| ITF M25 Pretoria | 2021/09/29 11:50 | Claassen, Jody Alan v Prechtel, Sebastian | 3-6,1-6 |
| ITF M25 Johannesburg | 2021/09/23 07:00 | Prechtel, Sebastian v Alastair Gray | 3-6,0-6 |
| ITF M25 Johannesburg | 2021/09/21 10:40 | Filip Peliwo v Prechtel, Sebastian | 3-6,4-6 |
| ITF M25 Johannesburg | 2021/09/14 09:30 | Prechtel, Sebastian v Hunter, Vaughn | 5-7,4-6 |
| ITF M15 Bad Waltersdorf | 2021/09/02 11:10 | Fausto Tabacco v Prechtel, Sebastian | 6-4,6-3 |
| ITF M15 Bad Waltersdorf | 2021/08/25 10:55 | Lipovsek Puches, Tomas v Prechtel, Sebastian | 7-5,6-1 |
| ITF M15 Warmbad-Villach | 2021/08/20 10:55 | Prechtel, Sebastian v Donati, Matteo | 3-6,6-4,3-6 |
| ITF M25 Pretoria | 2021/09/29 10:45 | Montsi, Khololwam v Goldsteiner, Peter | 6-4,6-3 |
| ITF M25 Johannesburg | 2021/09/24 07:55 | Alastair Gray v Montsi, Khololwam | 6-2,6-4 |
| ITF M25 Johannesburg | 2021/09/23 08:00 | Montsi, Khololwam v Kalovelonis, Markos | 6-1,6-3 |
| ITF M25 Johannesburg | 2021/09/21 10:25 | Vilardo, Francesco v Montsi, Khololwam | 4-6,5-7 |
| ITF M25 Johannesburg | 2021/09/14 11:30 | Howard-Tripp, Joshua v Montsi, Khololwam | 4-6,2-6 |
| ITF - M15 Monastir | 2021/08/05 08:50 | Mattia Bellucci v Montsi, Khololwam | 6-2,6-2 |
| ITF - M15 Monastir | 2021/08/04 16:45 | Montsi, Khololwam v Santiago Rodriguez Taverna | 7-5,7-5 |
| ITF - M15 Monastir | 2021/07/31 07:30 | Luca Potenza v Montsi, Khololwam | 7-5,6-1 |