Stadium: Court 2 Round: 64 Ground: Hardcourt outdoor
| 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 |
| Challenger - Winnipeg | 2019/07/10 15:00 | Jacob Grills v Shintaro Imai | 7-6,6-7,0-6 |
| Challenger Parma | 2019/06/20 08:00 | Jacob Grills v Jacopo Berrettini | 1-6,4-6 |
| Challenger Parma | 2019/06/18 08:00 | Taro Daniel v Jacob Grills | 6-4,3-6,4-6 |
| Challenger Parma | 2019/06/17 09:10 | Christopher Heyman v Jacob Grills | 6-7,1-6 |
| ITF M15 Kaltenkirchen | 2019/06/12 13:45 | Jacob Grills v Cedrik-Marcel Stebe | 4-6,6-4,1-6 |
| ITF M15 Kaltenkirchen | 2019/06/11 17:25 | Jacob Grills v Matheus P De Almeida | 5-7,7-6,7-6 |
| Challenger Recanati | 2019/07/06 19:30 | Lukas Lacko v Egor Gerasimov | 3-6,6-1,3-6 |
| Challenger Recanati | 2019/07/05 19:05 | Lukas Lacko v Viktor Galovic | 7-5,6-3 |
| Challenger Recanati | 2019/07/04 09:15 | Lukas Lacko v Emilio Gomez | 7-6,4-6,6-3 |
| Challenger Recanati | 2019/07/03 14:35 | Lukas Lacko v Alen Avidzba | 6-2,6-4 |
| Wimbledon | 2019/06/24 12:30 | Ramkumar Ramanathan v Lukas Lacko | 6-3,6-2 |
| Challenger Ilkley | 2019/06/19 17:15 | Lukas Lacko v Antoine Hoang | 3-6,5-7 |
| Challenger Ilkley | 2019/06/18 10:00 | Lukas Lacko v Adrian Menendez-Maceiras | 6-3,6-4 |
| ATP Hertogenbosch | 2019/06/08 09:00 | Jannik Sinner v Lukas Lacko | 6-7,7-6,6-2 |