Round: 44 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2019/10/20 14:30 | Keist, Luca v Wally Thayne | 6-4,6-1 |
| ITF - M25 Pensacola | 2019/05/07 15:00 | Spec, Matic v Keist, Luca | 7-5,7-5 |
| ITF - M25 Pensacola | 2019/05/06 14:00 | Sinn, Maximilian v Keist, Luca | 1-6,1-6 |
| ITF USA F28B | 2018/10/21 15:00 | Bradley, Julian v Keist, Luca | 6-3,6-0 |
| ITF Switzerland F3 | 2018/08/22 09:30 | Johan Nikles v Keist, Luca | 6-3,6-1 |
| ITF Switzerland F3 | 2018/08/20 08:40 | Eckert, Gilles v Keist, Luca | 1-6,1-6 |
| ITF Switzerland F3 | 2018/08/19 11:00 | Keist, Luca v Yannik Steinegger | 6-4,3-6,6-3 |
| ITF Morocco F2 | 2018/07/22 09:00 | Krivic, Ivan v Keist, Luca | 7-6,6-3 |
| ITF M15 Cancun | 2019/10/20 18:00 | Sikman, Philip v Force, Charles | 1-6,0-6 |
| ITF M15 Cancun | 2019/10/17 14:00 | Force, Charles v Mariano Kestelboim | 1-6,6-2,3-6 |
| ITF M15 Cancun | 2019/10/14 14:00 | Alberto Odiseo Alvarado Berrospi v Force, Charles | 6-2,3-6,8-10 |
| ITF M15 Cancun | 2019/10/13 18:30 | Martirosian, David v Force, Charles | 1-6,3-6 |
| ITF M15 Cancun | 2019/10/08 13:30 | Mayagoitia, Ricardo David v Force, Charles | 7-6,7-6 |
| ITF M15 Cancun | 2019/10/07 14:30 | Kapadia, Taha v Force, Charles | 2-6,1-6 |
| ITF M15 Cancun | 2019/08/26 18:15 | George Goldhoff v Force, Charles | 6-3,6-4 |
| ITF M15 Cancun | 2019/08/20 18:50 | Force, Charles v El Midhawy, Adam | 3-6,0-6 |