Stadium: Eve Zimmerman Court Round: 45 Ground: Hardcourt outdoor
| Challenger Stockton | 2018/09/29 22:00 | Nguyen, Daniel v Harris, Andrew | 0-6,4-6 |
| Challenger Tiburon | 2018/09/22 20:15 | Nguyen, Daniel v Hiltzik, Jared | 4-6,7-6,1-6 |
| ITF Japan F2 | 2018/03/18 02:00 | Nguyen, Daniel v Tung-Lin Wu | 6-7,7-6,7-6 |
| ITF Japan F2 | 2018/03/17 03:45 | Kaichi Uchida v Nguyen, Daniel | 6-4,3-6,3-6 |
| ITF Japan F2 | 2018/03/16 01:00 | Nguyen, Daniel v Kaito Uesugi | 6-2,2-6,7-6 |
| ITF Japan F2 | 2018/03/15 02:40 | Nguyen, Daniel v Kibi, Yuya | 6-2,1-6,6-1 |
| ITF Japan F2 | 2018/03/13 03:15 | Nguyen, Daniel v Jumpei Yamasaki | 6-1,2-6,6-1 |
| ITF Japan F1 | 2018/03/11 02:00 | Wishaya Trongcharoenchaikul v Nguyen, Daniel | 7-5,6-7,4-6 |
| Challenger Stockton | 2018/10/01 21:00 | Patrick Kypson v Kelly, Dayne | 6-4,6-1 |
| Challenger Stockton | 2018/09/30 23:45 | Kelly, Dayne v Harris, Andrew | 7-5,6-7,7-6 |
| Challenger Stockton | 2018/09/29 21:40 | Marc-Andrea Huesler v Kelly, Dayne | 7-6,3-6,3-6 |
| Challenger Tiburon | 2018/09/23 18:50 | Kelly, Dayne v Steven Diez | 4-6,6-7 |
| Challenger Tiburon | 2018/09/22 20:00 | Blake Ellis v Kelly, Dayne | 3-6,5-7 |
| Challenger Shanghai | 2018/09/11 05:35 | Kelly, Dayne v Miomir Kecmanovic | 6-4,6-7,2-6 |
| Challenger Shanghai | 2018/09/10 03:00 | Jacopo Berrettini v Kelly, Dayne | 2-6,3-6 |
| Challenger Shanghai Qual | 2018/09/09 04:30 | Bourchier, Harry v Kelly, Dayne | 3-6,2-6 |