Stadium: Ct 10 Round: 25 Ground: Hardcourt outdoor
| ITF Australia F7 | 2018/10/01 00:00 | Ibrahim, James v Johnson, Connor | 6-7,6-2,4-6 |
| ITF Australia F7 | 2018/09/29 05:00 | Alexey Shtengelov v Johnson, Connor | 2-6,0-6 |
| ITF Australia F7 | 2018/09/29 01:30 | Johnson, Connor v Ma, William | 6-3,7-6 |
| ITF Australia F6 | 2018/09/23 03:30 | Dane Sweeny v Johnson, Connor | 6-3,6-4 |
| ITF Tunisia F21 | 2018/05/26 09:00 | Meyer, Mark Stewart v Johnson, Connor | 6-4,1-6,6-4 |
| ITF Tunisia F20 | 2018/05/19 09:00 | Johnson, Connor v Ren Nakamura | 1-6,3-6 |
| ITF Romania F3 | 2017/06/10 11:00 | Ghilea, Vasile-Alexandru v Johnson, Connor | 6-2,6-1 |
| ITF Bosnia and Herzegovina F3 | 2017/06/04 08:00 | Bonetta, Dino v Johnson, Connor | 6-1,6-1 |
| 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 |
| ITF Netherlands F5 | 2018/08/21 08:00 | Kazuki Nishiwaki v Lazov, Alexander | 6-0,2-6,1-6 |
| ITF Netherlands F4 | 2018/08/18 11:00 | Kazuki Nishiwaki v Niels Lootsma | 2-6,2-6 |
| ITF Netherlands F4 | 2018/08/17 09:00 | Kazuki Nishiwaki v Jesper De Jong | 4-3 |
| ITF Netherlands F4 | 2018/08/16 10:30 | Mertens, Yannick v Kazuki Nishiwaki | 3-6,6-7 |
| ITF Netherlands F4 | 2018/08/15 12:45 | Butsch, Justin v Kazuki Nishiwaki | 6-7,0-6 |
| ITF Indonesia F3 | 2018/08/07 04:50 | Kazuki Nishiwaki v Ajeet Rai | 3-6,6-7 |