Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF M15 - Sharm El Sheikh | 2021/11/17 12:30 | Krittin Koaykul v Neil Oberleitner | 1-6,4-6 |
| ITF M15 - Sharm El Sheikh | 2021/11/08 08:00 | Neil Oberleitner v Dusan Rajic | 4-6,6-4,3-10 |
| ITF M15 - Sharm El Sheikh | 2021/11/07 07:30 | Neil Oberleitner v Abdulhamid Mubarak | 6-2,6-1 |
| ITF M15 - Sharm El Sheikh | 2021/10/21 08:00 | Marat Deviatiarov v Neil Oberleitner | 6-3,7-5 |
| ITF M15 - Sharm El Sheikh | 2021/10/20 08:00 | Akram El Sallaly v Neil Oberleitner | 6-7,6-2,3-6 |
| ITF M15 - Sharm El Sheikh | 2021/10/15 08:00 | Marek Gengel v Neil Oberleitner | 6-2,6-1 |
| ITF M15 - Sharm El Sheikh | 2021/10/14 08:00 | Neil Oberleitner v Lorenzo Bocchi | 3-6,6-1,7-6 |
| ITF M15 - Sharm El Sheikh | 2021/10/07 10:00 | Gabriel Decamps v Neil Oberleitner | 6-3,6-3 |
| ITF M15 - Sharm El Sheikh | 2021/11/17 12:50 | Erik Arutiunian v Duckhee Lee | 2-6,0-6 |
| ITF M15 - Sharm El Sheikh | 2021/11/10 12:50 | Daniel Little v Duckhee Lee | 7-6,7-6 |
| Challenger Columbus | 2021/09/19 20:15 | Duckhee Lee v Evan Song | 3-6,6-7 |
| ITF - M15 - Monastir | 2021/06/30 10:35 | Omni Kumar v Duckhee Lee | 6-0,6-2 |
| ITF - M15 - Monastir | 2021/06/25 10:30 | Imanol L Morillo v Duckhee Lee | 7-5,7-6 |
| ITF - M15 - Monastir | 2021/06/24 10:10 | Oscar Weightman v Duckhee Lee | 3-6,7-6,3-6 |
| ITF - M15 - Monastir | 2021/06/22 12:15 | Andre Ghem v Duckhee Lee | 2-6,2-6 |
| ITF - M15 - Monastir | 2021/06/16 11:10 | Luca Giacomini v Duckhee Lee | 6-3,6-1 |