Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/10/11 09:00 | Lukas H Lilleengen v Gonzalo Zeitune | 6-4,6-0 |
| ITF M15 Cairo | 2021/09/21 08:00 | Giovanni Calvano v Lukas H Lilleengen | 6-2,6-1 |
| ITF M15 Cairo | 2021/09/20 08:00 | Julian Gimenez v Lukas H Lilleengen | 1-6,4-6 |
| ITF M15 Cairo | 2021/09/19 08:30 | Lakshya Gupta v Lukas H Lilleengen | 0-6,4-6 |
| ITF M15 Cairo | 2021/09/13 07:00 | Gabriel Roveri Sidney v Lukas H Lilleengen | 6-3,6-7,10-8 |
| ITF M15 Cairo | 2021/09/12 11:00 | Atharva Sharma v Lukas H Lilleengen | 6-1,2-6,6-10 |
| ITF M15 Zilina | 2021/09/02 08:00 | Peter Goldsteiner v Lukas H Lilleengen | 6-7,6-0,6-2 |
| ITF M15 Zilina | 2021/09/01 10:55 | Lukas H Lilleengen v Dominik Kellovsky | 6-4,1-6,7-6 |
| ITF M15 Antalya | 2021/10/11 09:00 | Amer Naow v John Sperle | 1-6,4-6 |
| ITF M15 Huy | 2021/08/22 17:00 | John Sperle v Nicolas Bruna | 6-4,6-7,8-10 |
| ITF M25 Koksijde | 2021/08/19 08:00 | John Sperle v Simon Carr | 2-6,2-6 |
| ITF M25 Koksijde | 2021/08/16 08:00 | Victor Ernaelsteen v John Sperle | 3-6,3-6 |
| ITF M25 Wetzlar | 2021/08/03 15:30 | John Sperle v Osman Torski | 3-6,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 13:30 | Hazem Naw v John Sperle | 6-4,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Hendrik Jebens v John Sperle | 4-6,6-7 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 08:30 | Marvin Schaber v John Sperle | 2-6,2-6 |