Stadium: Court G Round: 25 Ground: Hardcourt outdoor
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 03:00 | Katayama, Sho v Kawahashi, Yuta | 4-6,5-7 |
| ITF Japan F5 | 2016/04/08 01:00 | Kawahashi, Yuta v Katayama, Sho | 1-6,2-6 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 03:00 | Katayama, Sho v Kawahashi, Yuta | 4-6,5-7 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 01:00 | Katayama, Sho v Ono, Masayoshi | 6-4,6-4 |
| Canada F7, Singles | 2018/09/12 14:00 | Findel-Hawkins, Jack v Katayama, Sho | 6-3,6-3 |
| Canada F7, Singles | 2018/09/11 19:45 | Emmett Ward v Katayama, Sho | 1-6,1-6 |
| ITF Canada F6 | 2018/09/04 17:00 | Alafia Ayeni v Katayama, Sho | 6-2,6-7,6-4 |
| ITF Guam F1 | 2018/06/22 00:00 | Ehara, Hiroyasu v Katayama, Sho | 7-6,6-4 |
| ITF Guam F1 | 2018/06/20 02:10 | Sonkin, Jeremy v Katayama, Sho | 6-7,5-7 |
| ITF Guam F1 | 2018/06/18 00:00 | Onoda, Ken v Katayama, Sho | 3-6,2-6 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 03:00 | Katayama, Sho v Kawahashi, Yuta | 4-6,5-7 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 01:00 | Kudo, Hayato v Kawahashi, Yuta | 2-6,1-6 |
| ITF Chinese Taipei F2 | 2018/07/24 03:30 | Yu, Cheng-Yu v Kawahashi, Yuta | 7-6,1-6,2-6 |
| ITF Chinese Taipei F1 | 2018/07/20 02:00 | Kawahashi, Yuta v Michael Zhu | 6-7,1-6 |
| ITF Chinese Taipei F1 | 2018/07/19 02:00 | Bang Shuo Yin v Kawahashi, Yuta | 6-3,1-6,2-6 |
| ITF Chinese Taipei F1 | 2018/07/17 03:50 | Kawahashi, Yuta v Barclay, David | 6-3,6-3 |
| ITF Japan F7 | 2018/06/07 03:50 | Inoue, Haru v Kawahashi, Yuta | 6-3,4-6,7-6 |
| ITF Japan F7 | 2018/06/04 01:00 | Kawakami, Rimpei v Kawahashi, Yuta | 4-6,3-6 |