Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Helsinki | 2021/06/01 07:00 | Bekkhan Atlangeriev v Karl Kiur Saar | 2-6,6-2,9-11 |
| ITF M15 Helsinki | 2021/05/31 10:00 | August Ehrnrooth v Karl Kiur Saar | 6-4,3-6,7-10 |
| ITF M15 Kouvola | 2021/05/27 09:55 | Karl Kiur Saar v Alexander Cozbinov | 0-6,1-6 |
| ITF M15 Kouvola | 2021/05/26 11:40 | Iiro Vasa v Karl Kiur Saar | 4-6,0-6 |
| ITF M15 Kouvola | 2021/05/25 08:30 | Karl Kiur Saar v Oskar Antinheimo | 6-3,6-0 |
| ITF M15 Parnu | 2020/11/02 09:30 | Karl Kiur Saar v Stefan Loncar | 4-6,6-7 |
| ITF M15 Monastir | 2020/10/18 10:30 | Karl Kiur Saar v Constantin Bittoun Kouzmine | 1-6,2-6 |
| ITF M15 Monastir | 2020/09/27 10:30 | Adam Bronka v Karl Kiur Saar | 6-4,6-2 |
| ITF M15 Las Palmas | 2021/04/27 08:00 | Lilian Marmousez v Francisco Andreu Garcia | 6-4,5-7,7-10 |
| ITF M15 Las Palmas | 2021/04/26 09:30 | Lilian Marmousez v Mehdi Sadaoui | 7-5,7-5 |
| ITF M15 Sibenik | 2021/04/22 09:40 | Lilian Marmousez v Lorenzo Bocchi | 6-7,5-7 |
| ITF M15 Sibenik | 2021/04/20 14:30 | Alessandro Bega v Lilian Marmousez | 6-7,3-6 |
| Challenger Lille | 2021/03/25 11:45 | Quentin Halys v Lilian Marmousez | 6-3,7-5 |
| Challenger Lille | 2021/03/24 13:30 | Baptiste Crepatte v Lilian Marmousez | 2-6,4-6 |
| ITF M15 Monastir | 2021/03/04 08:30 | Renta Tokuda v Lilian Marmousez | 3-6,6-3,6-2 |
| ITF M15 Monastir | 2021/02/27 08:25 | Stuart Parker v Lilian Marmousez | 6-1,6-2 |