Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/05/20 08:25 | David Poljak v Jeremy Beale | 6-7,1-6 |
| ITF M15 Monastir | 2021/05/18 10:20 | David Poljak v Louis Tessa | 7-6,6-4 |
| Challenger Salinas 2 | 2021/04/27 14:30 | Gonzalo Villanueva v David Poljak | 5-7,7-6,7-6 |
| Challenger Salinas 2 | 2021/04/26 18:35 | Miguel M Larrea v David Poljak | 3-6,0-6 |
| Challenger Salinas | 2021/04/18 15:00 | Tak Khunn Wang v David Poljak | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/04/10 07:30 | Mukund Sasikumar v David Poljak | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2021/04/09 07:30 | David Poljak v Luke Johnson | 6-3,1-6,6-3 |
| ITF M15 Sharm El Sheikh | 2021/04/08 07:30 | David Poljak v Mattia Bellucci | 6-2,6-1 |
| ITF M15 Antalya | 2021/05/19 07:30 | Naoki Nakagawa v Marsel Ilhan | 6-7,4-6 |
| ITF M15 Antalya | 2021/05/14 07:00 | Nick Hardt v Naoki Nakagawa | 6-2,6-0 |
| ITF M15 Antalya | 2021/05/13 06:50 | Naoki Nakagawa v Ivan Nedelko | 4-6,7-6,6-3 |
| ITF M15 Antalya | 2021/05/11 09:00 | Oleksii Krutykh v Naoki Nakagawa | 2-6,6-4,5-7 |
| ITF M15 Monastir | 2021/03/14 08:30 | Naoki Nakagawa v Franco Agamenone | 7-6,6-4 |
| ITF M15 Monastir | 2021/03/12 08:30 | Naoki Nakagawa v Simon Carr | 6-4,6-4 |
| ITF M15 Monastir | 2021/03/11 08:30 | Yannick Mertens v Naoki Nakagawa | 6-4,3-6,4-6 |
| ITF M15 Monastir | 2021/03/09 08:30 | Tomas Lipovsek Puches v Naoki Nakagawa | 2-6,2-6 |