Ground: Hardcourt outdoor
| ITF M15 Kursumlijska Banja | 2025/07/08 06:00 | Pietro R Scomparin v Julien Penzlin | 6-3,6-2 |
| UTR Pro Baton Rouge | 2025/01/12 15:00 | Julien Penzlin v Andrej Loncarevic | 6-4,7-6 |
| UTR Pro Baton Rouge | 2025/01/11 18:05 | Julien Penzlin v Thomas Kennedy | 6-1,6-2 |
| UTR Pro Baton Rouge | 2025/01/10 20:40 | Sanjeev Chundu v Julien Penzlin | 6-2,5-7,3-6 |
| UTR Pro Baton Rouge | 2025/01/09 18:55 | Dylan Jaen v Julien Penzlin | 7-5,3-6,6-7 |
| UTR Pro Baton Rouge | 2025/01/08 20:20 | Welsh Hotard v Julien Penzlin | 6-1,3-6,5-7 |
| UTR Pro Baton Rouge | 2025/01/06 20:15 | William Nolan v Julien Penzlin | 6-2,6-3 |
| ITF M25 Kassel | 2024/07/08 08:00 | Valentin Basel v Julien Penzlin | 6-3,6-2 |
| ITF M25 Tauste | 2025/08/04 11:22 | Volodymyr Iakubenko v Nico Rating | 6-1,4-6,1-0 |
| ITF M15 Dublin | 2025/07/30 13:54 | Volodymyr Iakubenko v Ryan James Storrie | 3-6,4-6 |
| ITF M25 Castelo Branco | 2025/07/14 08:00 | Tiago Silva v Volodymyr Iakubenko | 4-6,6-3,1-0 |
| ITF M15 Kayseri | 2025/07/03 07:00 | Ali Yazdani v Volodymyr Iakubenko | 3-6,6-2,6-3 |
| ITF M15 Kayseri | 2025/07/01 11:20 | Daniil Piatrouski v Volodymyr Iakubenko | 1-6,4-6 |
| ITF M15 Kayseri | 2025/06/27 09:00 | Paul Inchauspe v Volodymyr Iakubenko | 6-3,6-2 |
| ITF M15 Kayseri | 2025/06/26 07:30 | Volodymyr Iakubenko v Niklas Schell | 6-4,7-6 |
| ITF M15 Kayseri | 2025/06/24 07:30 | Volodymyr Iakubenko v Brandon Perez | 6-4,4-6,7-6 |