Stadium: Court 10 Round: 25
| ITF M15 Anning | 2019/01/03 05:30 | Eric Vanshelboim v Kazuki Nishiwaki | 4-6,6-1,6-4 |
| ITF M15 Anning | 2019/01/02 04:25 | Wang, Ruixuan v Kazuki Nishiwaki | 6-1,2-6,4-6 |
| Challenger Kobe | 2018/11/10 06:00 | Gao, Xin v Kazuki Nishiwaki | 6-4,6-4 |
| ITF Australia F8 | 2018/10/10 01:00 | Colin Sinclair v Kazuki Nishiwaki | 6-7,6-4,6-4 |
| ITF Australia F7 | 2018/10/04 00:00 | Colin Sinclair v Kazuki Nishiwaki | 6-3,6-3 |
| ITF Australia F7 | 2018/10/02 01:45 | Johnson, Connor v Kazuki Nishiwaki | 3-6,3-6 |
| Challenger Shanghai | 2018/09/08 05:00 | Aldin Setkic v Kazuki Nishiwaki | 6-3,6-2 |
| ITF Netherlands F6 | 2018/08/28 08:30 | Kazuki Nishiwaki v Kaczynski, Kevin | 2-6,3-6 |
| Thailande F6, Qualifications Simples | 2018/10/06 05:30 | Takeshima, Shunrou v Guo, Tianjia | 6-1,6-1 |
| ITF Thailand F5 | 2018/09/29 04:30 | Guo, Tianjia v Kousuke Ogura | 6-4,2-6,3-6 |
| ITF Thailand F4 | 2018/09/22 02:30 | Guo, Tianjia v Tanthaseraneewat, Suthinan | 4-6,1-6 |
| ITF China F12 Qual | 2018/08/12 02:00 | Guo, Tianjia v Peranamallur, Chandrasekhar Vignesh | 2-6,1-6 |
| ITF China F10 Qual | 2018/07/07 02:00 | Owen Lu v Guo, Tianjia | 3-6,6-2,6-4 |
| ITF China F7 | 2018/05/29 03:35 | Natthasith Kunsuwan v Guo, Tianjia | 6-1,6-3 |
| ITF China F7 Qual | 2018/05/28 02:00 | Guo, Tianjia v Li, Jianhui | 1-6,2-6 |
| ITF China F7 Qual | 2018/05/27 02:00 | Guo, Tianjia v Dubey, Ritesh | 6-0,6-0 |