Stadium: Indoor 1 Round: 54 Ground: Hardcourt outdoor
| Challenger St Brieuc | 2023/03/19 10:10 | Thomas Fancutt v Karl Kiur Saar | 6-3,3-6,6-2 |
| Challenger Columbus | 2022/09/18 17:25 | Karl Kiur Saar v Patrick Kypson | 3-6,3-6 |
| Challenger Nur-Sultan | 2022/07/17 09:00 | Karl Kiur Saar v Alafia Ayeni | 7-5,6-7,4-6 |
| ITF M15 Monastir | 2021/10/20 10:20 | Karl Kiur Saar v Gleb Sakharov | 4-6,3-6 |
| ITF M15 Monastir | 2021/10/18 09:30 | Karl Kiur Saar v Matteo Meneghetti | 7-6,6-2 |
| ITF M15 Helsinki | 2021/06/02 06:30 | Karl Kiur Saar v Lilian Marmousez | 2-6,4-6 |
| 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 Antalya | 2024/04/22 10:55 | Vesa Ahti v Yuquan Jin | 3-6,3-6 |
| ITF M15 Antalya | 2024/04/21 07:00 | Vesa Ahti v Dharmil Shah | 6-1,6-1 |
| ITF M15 Antalya | 2024/04/14 07:00 | Vesa Ahti v Mikhail Korovin | 6-7,2-6 |
| ITF M15 Les Franqueses | 2024/03/13 09:00 | Georgii Kravchenko v Vesa Ahti | 6-3,7-5 |
| ITF M15 Les Franqueses | 2024/03/12 10:00 | Aaron Gil Garcia v Vesa Ahti | 0-6,1-6 |
| ITF M15 Les Franqueses | 2024/03/10 12:00 | Pere Prat Turro v Vesa Ahti | 2-6,0-6 |
| ITF M15 Torello | 2024/03/06 12:40 | Vesa Ahti v Iliyan Radulov | 3-6,4-6 |
| ITF M15 Torello | 2024/03/05 09:00 | Kuzey Cekirge v Vesa Ahti | 6-4,6-7,5-10 |