Stadium: Court 7 Round: 46 Ground: Hardcourt outdoor
| ITF Japan F5 | 2018/04/02 03:10 | Shintaro Imai v Grills, Jacob | 6-1,6-1 |
| ITF Hong Kong F3 | 2017/07/08 01:30 | Grills, Jacob v Shintaro Imai | 6-7,3-6 |
| Challenger Granby Qual | 2018/07/21 14:00 | Gervais, Washi v Grills, Jacob | 4-6,2-6 |
| Gatineau, Canada | 2018/07/19 15:00 | Grills, Jacob v Soeda, Go | 6-2,1-6,4-6 |
| Gatineau, Canada | 2018/07/17 17:15 | Grills, Jacob v Sarkissian, Alexander | 6-3,7-6 |
| Challenger Gatineau Qual | 2018/07/16 14:00 | Patrick Kypson v Grills, Jacob | 3-6,1-6 |
| Challenger Gatineau Qual | 2018/07/15 16:40 | Grills, Jacob v Makoto Ochi | 1-6,7-5,6-1 |
| Challenger Gatineau Qual | 2018/07/14 21:55 | Grills, Jacob v Jumpei Yamasaki | 6-3,6-1 |
| Challenger Winnipeg Qual | 2018/07/08 23:15 | Lin, Jack Mingjie v Grills, Jacob | 6-4,6-0 |
| Challenger Winnipeg Qual | 2018/07/08 20:05 | Nicaise Muamba v Grills, Jacob | 6-7,0-6 |
| Challenger Granby Qual | 2018/07/21 15:55 | Liam Draxl v Shintaro Imai | 4-6,2-6 |
| Challenger Gatineau Qual | 2018/07/14 18:05 | Shintaro Imai v Antoine Escoffier | 4-6,6-3,1-6 |
| ITF Hong Kong F2 | 2018/07/07 02:00 | Banes, Maverick v Shintaro Imai | 7-5,6-2 |
| ITF Hong Kong F2 | 2018/07/06 02:00 | Shintaro Imai v Ryota Tanuma | 6-2,6-2 |
| ITF Hong Kong F2 | 2018/07/05 02:00 | Issei Okamura v Shintaro Imai | 2-6,1-6 |
| ITF Hong Kong F2 | 2018/07/04 02:00 | Li, Hei Yin Andrew v Shintaro Imai | 2-6,0-6 |
| ITF Hong Kong F2 | 2018/07/02 04:00 | Yuki Mochizuki v Shintaro Imai | 6-4,5-7,3-6 |
| ITF Hong Kong F1 | 2018/06/25 02:00 | Shintaro Imai v Ryota Tanuma | 3-6,2-6 |