Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2019/09/16 02:45 | Jacob Grills v Evan King | 4-6,6-3,2-6 |
| Challenger Shanghai | 2019/09/09 06:05 | Jacob Grills v Shuichi Sekiguchi | 6-3,1-6,1-6 |
| Challenger Jinan | 2019/09/03 02:00 | Teymuraz Gabashvili v Jacob Grills | 6-4,5-7,6-1 |
| Challenger Baotou | 2019/08/26 02:00 | Jacob Grills v Di Wu | 6-7,4-6 |
| ATP Los Cabos | 2019/07/29 00:00 | Dominik Koepfer v Jacob Grills | 6-3,7-6 |
| ATP Los Cabos | 2019/07/28 01:25 | Jacob Grills v Lukas Lacko | 6-3,6-2 |
| Challenger Granby | 2019/07/22 17:30 | Cem Ilkel v Jacob Grills | 6-1,6-0 |
| Challenger Gatineau | 2019/07/16 18:10 | Yosuke Watanuki v Jacob Grills | 6-7,6-1,6-0 |
| ITF M25 Darwin | 2019/09/26 00:30 | Vladyslav Orlov v Alexander Crnokrak | 3-6,6-2,6-2 |
| ITF M25 Darwin | 2019/09/24 02:45 | Wishaya Trongcharoenchaikul v Alexander Crnokrak | 6-7,4-6 |
| ITF M25 Cairns | 2019/09/19 04:30 | Alexander Crnokrak v Brydan Klein | 4-6,7-5,3-6 |
| ITF M25 Cairns | 2019/09/18 02:45 | Rhett Purcell v Alexander Crnokrak | 1-6,2-6 |
| ITF M15 Jakarta | 2019/08/23 02:30 | Alexander Crnokrak v Dusty H. Boyer | 3-6,7-6,4-6 |
| ITF M15 Jakarta | 2019/08/22 04:00 | Yu Hsiang Chiu v Alexander Crnokrak | 1-6,2-6 |
| ITF M15 Jakarta | 2019/08/20 05:05 | Alexander Crnokrak v Karunuday Singh | 6-2,6-2 |
| ITF M15 Jakarta | 2019/08/13 04:45 | Alexander Crnokrak v Aaron Addison | 6-7,3-6 |