Stadium: Court 8 Round: 45 Ground: Clay
| ITF Dominican Republic F3 | 2018/12/15 14:30 | Nick Hardt v Alejandro Tabilo | 7-5,6-3 |
| ITF Dominican Republic F3 | 2018/12/14 15:00 | Oscar Jose Gutierrez v Nick Hardt | 2-6,2-6 |
| ITF Dominican Republic F3 | 2018/12/13 14:00 | Conner Huertas Del Pino v Nick Hardt | 4-6,6-2,2-6 |
| ITF Dominican Republic F3 | 2018/12/12 14:00 | Alejandro Mendoza v Nick Hardt | 1-6,0-6 |
| ITF Dominican Republic F3 | 2018/12/11 13:30 | Nick Hardt v Maxime Cressy | 7-6,6-1 |
| ITF Dominican Republic F2 | 2018/12/05 14:00 | Nick Hardt v Alejandro Tabilo | 2-6,2-6 |
| ITF Dominican Republic F2 | 2018/12/04 17:25 | Alejandro Mendoza v Nick Hardt | 1-6,1-6 |
| ITF USA F32 | 2018/11/16 17:45 | Patrick Daciek v Nick Hardt | 7-5,7-5 |
| ITF USA F35 | 2018/12/04 20:00 | Dragos Constantin Ignat v Naoki Nakagawa | 6-3,7-6 |
| ITF USA F35 | 2018/12/02 15:00 | Naoki Nakagawa v Enzo Wallart | 6-4,2-6,6-4 |
| ITF USA F34 | 2018/11/26 18:15 | Vasile-Alexandru Ghilea v Naoki Nakagawa | 6-7,6-3,6-1 |
| Challenger Kobe | 2018/11/10 02:00 | Yuki Mochizuki v Naoki Nakagawa | 6-1,6-7,6-2 |
| ITF USA F28 | 2018/10/14 15:00 | Naoki Nakagawa v Zandrix Acob | 5-7,3-6 |
| ITF USA F28 | 2018/10/13 17:30 | Naoki Nakagawa v Ian O'Jon | 6-4,6-2 |
| ITF USA F27 | 2018/10/10 17:20 | Naoki Nakagawa v Sebastian Korda | 3-6,2-6 |
| Challenger Gimcheon Qual | 2018/05/06 06:20 | Naoki Nakagawa v Luke Saville | 4-6,4-6 |