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