Stadium: Court 1 Round: 25
| ITF Korea F5 | 2018/08/24 01:15 | Na, Jung-Woong v Makoto Ochi | 6-3,2-6,0-6 |
| ITF Korea F5 | 2018/08/22 02:00 | Mark Whitehouse v Na, Jung-Woong | 6-4,3-6,3-6 |
| ITF Korea F5 | 2018/08/21 02:00 | Kang, Ku Keon v Na, Jung-Woong | 6-4,6-7,0-6 |
| Challenger Gwangju Qual | 2018/08/13 01:00 | Na, Jung-Woong v He, Yecong | 6-3,5-7,5-7 |
| Challenger Gwangju Qual | 2018/08/12 01:30 | Shintaro Imai v Na, Jung-Woong | 4-6,2-6 |
| Challenger Gwangju Qual | 2018/08/11 01:30 | Issei Okamura v Na, Jung-Woong | 3-6,6-1,1-6 |
| ITF Korea F1 | 2018/06/06 01:00 | Na, Jung-Woong v Son, Ji Hoon | 6-4,6-7,6-4 |
| Challenger - Busan | 2018/05/15 05:50 | Max Purcell v Na, Jung-Woong | 6-4,6-1 |
| ITF Korea F5 | 2018/08/21 03:15 | Kim, Cheong-Eui v Batalla Diez, Juan Ignacio | 6-1,6-2 |
| ITF Ecuador F2 | 2018/07/31 17:05 | Bisono Estrella, Juan Rafael v Batalla Diez, Juan Ignacio | 6-2,6-7,6-1 |
| ITF Ecuador F1 | 2018/07/24 16:35 | Mercier, Tyler v Batalla Diez, Juan Ignacio | 6-4,6-7,7-6 |
| ITF USA F18 | 2018/06/25 18:00 | Batalla Diez, Juan Ignacio v Brandon Perez | 2-6,1-6 |
| ITF USA F18 | 2018/06/25 14:00 | Batalla Diez, Juan Ignacio v Monroe, Shane | 2-6,6-3,7-5 |
| ITF USA F16 | 2018/06/17 17:00 | Batalla Diez, Juan Ignacio v Fainblum, Daniel | 4-6,1-6 |
| ITF USA F16 | 2018/06/16 19:00 | Batalla Diez, Juan Ignacio v Rihani, Rached | 6-3,6-1 |
| ITF Mexico F3 | 2018/05/20 14:30 | Batalla Diez, Juan Ignacio v Alejandro H Franco | 6-3,4-6,6-7 |