Head to Head
| Slovakian International | 2020/06/18 10:00 | Lukáš Klein v Filip Horanský | 6-2,6-7,6-3 |
| Challenger Portoroz | 2019/08/15 14:00 | Lukáš Klein v Filip Horanský | 1-6,6-4,6-3 |
| Challenger Bastad Qual | 2018/07/08 13:00 | Filip Horanský v Lukáš Klein | 6-7,6-3,6-1 |
| Challenger Budapest Qual | 2018/02/03 21:15 | Filip Horanský v Lukáš Klein | 3-6,4-6 |
| ITF Slovakia F3 | 2017/08/13 09:00 | Filip Horanský v Lukáš Klein | 6-4,6-4 |
Home History
| Slovakian International | 2020/07/09 12:00 | Lukáš Klein v Matej Galik | 6-3,6-2 |
| Slovakian International | 2020/06/22 12:00 | Alex Molcan v Lukáš Klein | 6-2,2-6,2-6 |
| Slovakian International | 2020/06/19 10:00 | Lukáš Klein v Norbert Gombos | 3-6,6-4,6-4 |
| Slovakian International | 2020/06/18 10:00 | Lukáš Klein v Filip Horanský | 6-2,6-7,6-3 |
| Challenger Nur-Sultan | 2020/03/11 06:40 | Lukáš Klein v Kimmer Coppejans | 6-3,4-6,1-6 |
| Challenger Nur-Sultan | 2020/03/10 05:00 | Rostislav Galfinger v Lukáš Klein | 0-6,1-6 |
| ITF M15 Trnava | 2020/02/29 11:55 | Lukáš Klein v Danylo Kalenichenko | 4-6,2-6 |
| ITF M15 Trnava | 2020/02/28 12:05 | Lukáš Klein v Aldin Setkic | 6-2,5-7,6-4 |
Away History
| Slovakian International | 2020/06/18 10:00 | Lukáš Klein v Filip Horanský | 6-2,6-7,6-3 |
| ATP Santiago | 2020/02/25 20:25 | Filip Horanský v Juan Pablo Varillas | 4-6,2-6 |
| ATP Santiago | 2020/02/23 17:20 | Filip Horanský v Pedro Sakamoto | 7-6,6-7,6-4 |
| ATP Santiago | 2020/02/22 18:15 | Filip Horanský v Gonzalo Lama | 7-6,7-5 |
| ATP Rio de Janeiro | 2020/02/16 19:30 | Filip Horanský v Pedro Martinez | 4-6,2-6 |
| ATP Rio de Janeiro | 2020/02/15 20:35 | Mario Vilella Martinez v Filip Horanský | 6-7,3-6 |
| ATP Buenos Aires | 2020/02/11 22:05 | Filip Horanský v Juan Ignacio Londero | 4-6,6-4,2-6 |
| ATP Buenos Aires | 2020/02/09 17:00 | Joao Domingues v Filip Horanský | 0-6,6-7 |