Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Fairfield | 2018/10/10 19:00 | JC Aragone v Casper Ruud | 1-6,6-7 |
| Challenger Fairfield | 2018/10/09 19:40 | Marc Polmans v JC Aragone | 4-6,7-6,3-6 |
| Challenger Stockton | 2018/10/02 17:00 | William Blumberg v JC Aragone | 3-6,6-2,6-2 |
| Challenger Tiburon | 2018/09/26 20:00 | JC Aragone v Noah Rubin | 6-7,4-6 |
| Challenger Tiburon | 2018/09/24 18:35 | Jay Clarke v JC Aragone | 2-6,6-7 |
| Challenger Cary | 2018/09/11 20:45 | Alexei Popyrin v JC Aragone | 6-3,6-4 |
| Challenger Chicago | 2018/09/07 17:40 | JC Aragone v Dominik Koepfer | 4-6,2-6 |
| Challenger Chicago | 2018/09/06 17:45 | Alexander Sarkissian v JC Aragone | 6-2,6-7,6-7 |
| Challenger Ningbo | 2018/10/18 03:00 | Tatsuma Ito v Rigele Te | 6-4,6-4 |
| Challenger Ningbo | 2018/10/16 10:00 | Tatsuma Ito v Yusuke Takahashi | 7-6,6-3 |
| ATP Tokyo | 2018/09/30 03:50 | Tatsuma Ito v Yosuke Watanuki | 2-6,4-6 |
| ATP Tokyo | 2018/09/29 04:45 | Mackenzie McDonald v Tatsuma Ito | 4-6,6-1,3-6 |
| ATP Shenzhen | 2018/09/25 12:15 | Tatsuma Ito v Taro Daniel | 6-2,5-7,6-7 |
| ATP Shenzhen | 2018/09/22 08:10 | Federico Gaio v Tatsuma Ito | 6-4,3-6,1-6 |
| Challenger Zhangjiagang | 2018/09/06 06:10 | Yibing Wu v Tatsuma Ito | 7-6,4-6,6-3 |
| Challenger Zhangjiagang | 2018/09/04 03:45 | Steven Diez v Tatsuma Ito | 4-6,1-6 |