Stadium: Court 20 Round: 62 Ground: Clay
| 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 Zilina | 2021/08/31 07:30 | Lukas H Lilleengen v Janos Fekete | 6-1,6-1 |