Stadium: Court 1 Round: 62 Ground: Clay
| Wimbledon | 2021/06/22 10:00 | Martin Klizan v Zdenek Kolar | 1-6,2-6 |
| Challenger Bratislava | 2021/06/12 15:15 | Martin Klizan v Tallon Griekspoor | 4-6,7-5,4-6 |
| Challenger Bratislava | 2021/06/11 15:15 | Martin Klizan v Andrey Kuznetsov | 7-6,6-2 |
| Challenger Bratislava | 2021/06/09 15:05 | Juan Manuel Cerundolo v Martin Klizan | 7-6,3-6,5-7 |
| Challenger Bratislava | 2021/06/07 14:00 | Mats Moraing v Martin Klizan | 6-7,7-6,5-7 |
| Challenger Biella | 2021/06/02 13:25 | Felipe Meligeni Rodrigues Alves v Martin Klizan | 6-2,6-4 |
| Challenger Biella | 2021/06/01 08:00 | Andrea Collarini v Martin Klizan | 5-7,6-2,4-6 |
| French Open | 2021/05/24 08:30 | Martin Klizan v Carlos Taberner | 1-6,2-6 |
| ITF M15 Antalya | 2023/12/10 07:00 | Vardan Manukyan v Ali Yazdani | 7-5,2-6,8-10 |
| ITF M15 Sharm El Sheikh | 2023/11/14 08:00 | Giacomo Revelli v Vardan Manukyan | 4-6,6-2,11-9 |
| ITF M15 Sharm El Sheikh | 2023/11/13 08:00 | Vardan Manukyan v Ioan A Teglas | 7-6,6-1 |
| ITF M15 Sharm El Sheikh | 2023/11/12 08:00 | Vardan Manukyan v RunYu Zhao | 6-3,6-2 |
| ITF M25 Pazardzhik | 2023/10/04 07:00 | Anthony Genov v Vardan Manukyan | 6-3,6-1 |
| ITF M25 Pazardzhik | 2023/09/24 10:30 | Vardan Manukyan v Silvio Mencaglia | 3-6,4-6 |
| UTR Pro Sofia | 2023/09/09 08:00 | Vardan Manukyan v Christos Keisidis | 0-4 |
| UTR Pro Sofia | 2023/09/08 08:00 | Anthony Turchi v Vardan Manukyan | 6-2,3-6,2-6 |