Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF Chinese Taipei F2 | 2018/07/24 03:30 | Yu, Cheng-Yu v Kawahashi, Yuta | 7-6,1-6,2-6 |
| ITF Chinese Taipei F1 | 2018/07/20 02:00 | Kawahashi, Yuta v Michael Zhu | 6-7,1-6 |
| ITF Chinese Taipei F1 | 2018/07/19 02:00 | Bang Shuo Yin v Kawahashi, Yuta | 6-3,1-6,2-6 |
| ITF Chinese Taipei F1 | 2018/07/17 03:50 | Kawahashi, Yuta v Barclay, David | 6-3,6-3 |
| ITF Japan F7 | 2018/06/07 03:50 | Inoue, Haru v Kawahashi, Yuta | 6-3,4-6,7-6 |
| ITF Japan F7 | 2018/06/04 01:00 | Kawakami, Rimpei v Kawahashi, Yuta | 4-6,3-6 |
| ITF Japan F5 | 2018/04/04 05:35 | Kawahashi, Yuta v Ryota Tanuma | 6-3,1-6,4-6 |
| ITF Japan F5 | 2018/04/03 05:35 | Duckhee Lee v Kawahashi, Yuta | 6-7,6-7 |
| ITF Chinese Taipei F2 | 2018/07/25 03:30 | Wei-De Lin v Hu, Nicholas S | 7-6,4-6,6-3 |
| ITF Chinese Taipei F1 | 2018/07/18 02:00 | Ray Ho v Wei-De Lin | 6-1,7-5 |
| ITF Hong Kong F2 | 2018/07/02 02:00 | Wei-De Lin v Ryota Tanuma | 2-6,4-6 |
| ITF Hong Kong F2 Qual | 2018/07/01 04:30 | Wei-De Lin v Mosqueda, Dave Sebastian | 6-3,6-2 |
| ITF Hong Kong F1 | 2018/06/26 03:15 | Wei-De Lin v Jumpei Yamasaki | 3-6,3-6 |
| ITF Hong Kong F1 Qual | 2018/06/24 03:00 | Wei-De Lin v Winter Meagher | 5-7,6-2,6-1 |
| ITF Singapore F2 | 2018/05/19 02:00 | Romios, Matthew Christopher v Wei-De Lin | 7-6,6-3 |
| ITF Singapore F1 | 2018/05/14 02:00 | Kaito Uesugi v Wei-De Lin | 6-3,6-2 |