Stadium: Court 2 Round: 25 Ground: Clay
| ITF Thailand F9 | 2015/05/09 03:00 | Jacob Grills v Karunuday Singh | 1-6,6-3,6-4 |
| Challenger Kobe | 2018/11/12 02:00 | Jacob Grills v Tung-Lin Wu | 2-6,4-6 |
| Challenger Kobe | 2018/11/11 03:35 | Jacob Grills v Issei Okamura | 1-6,6-4,6-3 |
| Challenger Kobe | 2018/11/10 04:40 | Jacob Grills v Matej Sabanov | 7-6,5-7,6-1 |
| Challenger Canberra 2 | 2018/11/01 23:00 | Maxime Janvier v Jacob Grills | 7-6,6-4 |
| Challenger Canberra 2 | 2018/10/31 00:35 | Sadio Doumbia v Jacob Grills | 6-7,6-3,3-6 |
| Challenger Canberra 2 | 2018/10/29 03:55 | Jacob Grills v Hiroki Moriya | 4-6,6-4,6-1 |
| Challenger Traralgon | 2018/10/22 02:20 | Sebastian Fanselow v Jacob Grills | 6-3,6-3 |
| ITF Australia F8 | 2018/10/12 00:00 | Maverick Banes v Jacob Grills | 6-4,6-2 |
| ITF Thailand F7 | 2018/10/31 05:45 | Sanjar Fayziev v Karunuday Singh | 6-2,6-2 |
| ITF Vietnam F4 | 2018/10/25 04:30 | Ajeet Rai v Karunuday Singh | 6-1,6-2 |
| ITF Vietnam F4 | 2018/10/23 05:30 | Karunuday Singh v Markus Eriksson | 7-6,6-3 |
| ITF Thailand F6 | 2018/10/10 05:05 | Karunuday Singh v Tsung-Hao Huang | 6-2,7-5 |
| ITF Thailand F6 | 2018/10/09 02:30 | Maciej Smola v Karunuday Singh | 1-6,4-6 |
| ITF Thailand F4 | 2018/09/28 03:00 | Kento Takeuchi v Karunuday Singh | 7-6,6-0 |
| ITF Thailand F4 | 2018/09/27 02:30 | Ryota Tanuma v Karunuday Singh | 2-6,6-7 |
| ITF Thailand F4 | 2018/09/26 02:30 | Karunuday Singh v Jumpei Yamasaki | 6-4,7-5 |