Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/04/11 08:00 | Knoess, Vincent v Janis, Jason | 0-6,3-6 |
| ITF - M15 Monastir | 2021/02/28 09:00 | Valentin Lapalu v Janis, Jason | 6-1,6-1 |
| ITF - M15 Monastir | 2021/02/21 11:00 | Daiki Yoshimura v Janis, Jason | 6-0,6-2 |
| ITF - M15 Monastir | 2021/02/14 08:30 | Giacalone, Omar v Janis, Jason | 6-2,6-1 |
| ITF - M15 Monastir | 2021/02/10 08:30 | Janis, Jason v Erler, Alexander | 0-6,4-6 |
| ITF - M15 Monastir | 2021/01/31 08:30 | Janis, Jason v Alexandre Ruscica | 1-6,0-6 |
| ITF - M15 Monastir | 2020/12/15 08:00 | Lucas Poullain v Janis, Jason | 6-2,6-0 |
| ITF - M15 Monastir | 2020/12/06 09:00 | Janis, Jason v Zhuk, Uladzislau | 6-4,2-6,3-10 |
| ITF - M15 Monastir | 2021/04/11 08:00 | Greif, Jonas v Kawahashi, Yuta | 2-6,3-6 |
| Challenger Kobe | 2019/11/05 01:30 | Renta Tokuda v Kawahashi, Yuta | 6-3,6-1 |
| Challenger Kobe | 2019/11/04 01:30 | Kawahashi, Yuta v Ren Nakamura | 6-2,6-1 |
| ITF M15 Changwon | 2019/10/16 02:55 | Kawahashi, Yuta v Shabaz, Michael | 7-5,2-6,4-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/16 02:00 | Kawahashi, Yuta v Yuta Kikuchi | 5-7,7-5,7-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/15 03:30 | Rio Noguchi v Kawahashi, Yuta | 4-6,3-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/14 01:00 | Kawahashi, Yuta v Kazuma Kawachi | 7-5,6-1 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/13 02:30 | Sho Shimabukuro v Kawahashi, Yuta | 2-6,6-4,3-6 |