Stadium: Centre Court Round: 25 Ground: Hardcourt indoor
| French Open | 2019/06/01 15:15 | Karen Khachanov v Martin Klizan | 6-1,6-4,6-3 |
| French Open | 2019/05/30 15:55 | Martin Klizan v Lucas Pouille | 7-6,2-6,6-3,3-6,9-7 |
| French Open | 2019/05/28 12:35 | Martin Klizan v Mikhail Kukushkin | 3-6,5-7,6-4,6-2,6-3 |
| ATP Róma | 2019/05/11 16:45 | Filippo Baldi v Martin Klizan | 6-3,6-1 |
| ATP Madrid | 2019/05/06 14:10 | Marin Čilić v Martin Klizan | 6-4,2-6,7-6 |
| ATP Madrid | 2019/05/05 14:35 | Adrian Mannarino v Martin Klizan | 3-6,2-6 |
| ATP Madrid | 2019/05/04 16:55 | Ernests Gulbis v Martin Klizan | 4-6,6-7 |
| ATP München | 2019/05/01 13:00 | Marco Cecchinato v Martin Klizan | 6-1,6-3 |
| Challenger Bratislava | 2019/06/18 08:00 | Jiri Lehecka v Lucas Gerch | 4-6,4-6 |
| Challenger Bratislava | 2019/06/17 08:00 | Lucas Gerch v Danylo Kalenichenko | 6-4,6-2 |
| ITF M15 Kaltenkirchen | 2019/06/11 09:00 | Christian Lindell v Lucas Gerch | 6-1,6-1 |
| ITF M25 Most | 2019/05/30 08:00 | Colin Sinclair v Lucas Gerch | 6-2,5-7,6-3 |
| ITF M25 Most | 2019/05/28 14:20 | Jan Silhavy v Lucas Gerch | 1-6,0-6 |
| ITF M25 Jablonec Nad Nisou | 2019/05/23 14:00 | Evan Furness v Lucas Gerch | 7-6,6-4 |
| ITF M25 Jablonec Nad Nisou | 2019/05/23 10:15 | Fabien Reboul v Lucas Gerch | 3-6,1-6 |
| ITF M15 Troisdorf | 2019/05/08 10:30 | Lucas Gerch v Oscar Jose Gutierrez | 3-6,2-6 |