Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| Challenger San Francisco | 2017/02/10 22:00 | Tatsuma Ito v Zhang, Ze | 2-6,3-6 |
| Chengdu, China | 2018/08/01 03:00 | Tatsuma Ito v Niesten, Miliaan | 6-4,6-1 |
| Chengdu, China | 2018/07/31 04:40 | Tatsuma Ito v Petrovic, Danilo | 7-6,7-6 |
| Gatineau, Canada | 2018/07/17 14:00 | Tatsuma Ito v Neuchrist, Maximilian | 7-6,3-6,5-7 |
| Challenger Winnipeg | 2018/07/10 16:30 | Tatsuma Ito v Marc-Andrea Huesler | 6-7,2-6 |
| Wimbledon Qual | 2018/06/25 11:25 | Dominik Koepfer v Tatsuma Ito | 6-4,6-3 |
| Ilkley, Great Britain | 2018/06/21 11:35 | Polansky, Peter v Tatsuma Ito | 6-2,6-4 |
| Ilkley, Great Britain | 2018/06/19 14:00 | Tatsuma Ito v Klahn, Bradley | 6-4,6-7,6-3 |
| Challenger - Nottingham | 2018/06/13 10:00 | Tatsuma Ito v Schnur, Brayden | 3-6,6-3,6-7 |
| Chengdu, China | 2018/08/01 09:45 | Zhang, Ze v Alexander Bublik | 4-6,6-4,6-2 |
| Chengdu, China | 2018/07/31 03:00 | Zhang, Ze v Wu, Di | 7-5,6-2 |
| Challenger Bastad | 2018/07/10 09:00 | Corentin Moutet v Zhang, Ze | 6-2,6-4 |
| Challenger Recanati | 2018/07/04 13:35 | Zhang, Ze v Salvatore Caruso | 4-6,6-3,5-7 |
| Challenger - Busan | 2018/05/18 03:15 | Yosuke Watanuki v Zhang, Ze | 4-6,6-4,6-1 |
| Challenger - Busan | 2018/05/17 02:00 | Zhang, Ze v Bhambri, Yuki | 6-4,6-3 |
| Challenger - Busan | 2018/05/15 07:10 | Zhang, Ze v Kelly, Dayne | 6-1,6-4 |
| Challenger Gimcheon | 2018/05/08 02:00 | Mackenzie McDonald v Zhang, Ze | 7-6,7-6 |