Estadio: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M25 Sintra | 2021/09/16 11:05 | Alejandro Moro Canas v Shintaro Imai | 6-7,6-1,6-3 |
| ITF M25 Sintra | 2021/09/14 17:45 | Alibek Kachmazov v Shintaro Imai | 3-6,6-3,2-6 |
| ITF M25 Sintra | 2021/09/09 11:25 | Luis Faria v Shintaro Imai | 7-5,7-5 |
| ITF M25 Sintra | 2021/09/08 09:00 | Christian Langmo v Shintaro Imai | 5-7,6-2,6-7 |
| ITF M15 Monastir | 2021/08/19 07:30 | Shintaro Imai v Hady Habib | 5-7,4-6 |
| ITF M15 Monastir | 2021/08/18 07:30 | Shintaro Imai v Omni Kumar | 6-4,7-5 |
| ITF M15 Monastir | 2021/08/11 19:55 | Luciano Darderi v Shintaro Imai | 6-2,4-6,6-3 |
| ITF M25 Decatur | 2021/08/05 14:50 | Karlis Ozolins v Shintaro Imai | 7-6,3-6,7-6 |
| Challenger de Poznan | 2021/07/27 14:00 | Leo Borg v Alexander Shevchenko | 5-7,2-6 |
| Challenger de Tampere | 2021/07/20 13:30 | Nicolas Kicker v Leo Borg | 6-3,6-0 |
| ATP Bastad | 2021/07/11 13:40 | Francisco Cerundolo v Leo Borg | 6-3,6-1 |
| UTR Pro Tennis Series - Copenhage | 2021/06/15 12:30 | Sebastian Grundtvig Jorgensen v Leo Borg | 6-3,5-2 |
| ITF 15 Antalya | 2021/05/19 07:20 | Nicolás Moreno de Alboran v Leo Borg | 6-1,6-1 |
| ITF 15 Antalya | 2021/05/13 10:15 | Leo Borg v Timofey Skatov | 2-6,1-6 |
| ITF 15 Antalya | 2021/05/11 10:10 | Leo Borg v Fermin Tenti | 7-6,6-0 |
| ITF 15 Antalya | 2021/05/05 10:55 | Timofey Skatov v Leo Borg | 6-2,6-2 |