| Challenger Bratislava | 06/07 14:00 | 25 | [243] Mats Moraing v Martin Klizan [176] | 6-7,7-6,5-7 | |
| Challenger Biella | 06/02 13:25 | 26 | [236] Felipe M R Alves v Martin Klizan [176] | 6-2,6-4 | |
| Challenger Biella | 06/01 08:00 | 25 | [203] Andrea Collarini v Martin Klizan [176] | 5-7,6-2,4-6 | |
| French Open | 05/24 08:30 | 14 | [176] Martin Klizan v Carlos Taberner [137] | 1-6,2-6 | |
| ATP Lyon | 05/16 10:10 | 14 | [102] Mikael Ymer v Martin Klizan [177] | 6-3,1-6,6-4 | |
| ATP Monte Carlo | 04/10 09:00 | 14 | [162] Martin Klizan v Salvatore Caruso [87] | 3-6,4-6 | |
| ATP Marbella | 04/04 13:30 | 14 | [360] Carlos Gomez-Herrera v Martin Klizan [161] | 6-4,6-1 | |
| Challenger Marbella | 04/02 12:00 | 27 | [161] Martin Klizan v Alessandro Giannessi [169] | 0-6,3-6 | |
| Challenger Marbella | 03/31 13:15 | 26 | [134] Henri Laaksonen v Martin Klizan [161] | 3-6,3-6 | |
| Challenger Marbella | 03/29 13:50 | 25 | [156] Maxime Cressy v Martin Klizan [161] | 1-6,6-7 | |
| Challenger Biella | 03/09 10:15 | 25 | [158] Martin Klizan v Matthias Bachinger [275] | 1-6,1-6 | |
| Challenger Nur-Sultan | 03/03 04:00 | 25 | [243] Tung-Lin Wu v Martin Klizan [156] | 6-3,4-6,7-6 | |
| Challenger Nur-Sultan | 02/26 07:40 | 27 | [159] Martin Klizan v Prajnesh Gunneswaran [138] | 3-6,6-4,4-6 | |
| Challenger Nur-Sultan | 02/24 11:10 | 26 | [159] Martin Klizan v Ulises Blanch [244] | 6-7,6-2,7-6 | |
| Challenger Nur-Sultan | 02/22 09:30 | 25 | [159] Martin Klizan v Timofey Skatov [454] | 6-4,4-6,7-6 | |
| Challenger Biella | 02/17 17:05 | 26 | [158] Martin Klizan v Andreas Seppi [108] | 6-7,3-6 | |
| Challenger Biella | 02/15 14:35 | 25 | [142] Bernabe Zapata Miralles v Martin Klizan [158] | 6-7,4-6 | |
| Challenger Biella | 02/09 10:50 | 25 | [158] Martin Klizan v Illya Marchenko [212] | 2-6,6-7 | |
| Australian Open | 01/10 11:45 | 60 | [230] Felipe M R Alves v Martin Klizan [152] | 6-1,6-4 | |
| Challenger Ortisei | 11/19 13:20 | 26 | [149] Martin Klizan v Tomas Machac [197] | 4-6,2-6 | |
| Challenger Ortisei | 11/17 13:50 | 25 | [149] Martin Klizan v Giulio Zeppieri [319] | 6-1,6-3 | |
| ATP Sofia | 11/09 12:10 | 25 | [149] Martin Klizan v Adrian Mannarino [36] | 6-3,1-6,5-7 | |
| ATP Sofia | 11/08 11:00 | 164 | [114] Taro Daniel v Martin Klizan [149] | 6-3,6-4 | |
| ATP Sofia | 11/07 10:00 | 64 | [235] Max Purcell v Martin Klizan [149] | 5-7,4-6 | |
| Challenger Eckental | 11/02 10:55 | 25 | Mats Rosenkranz v Martin Klizan | 6-2,6-2 | |
| Challenger Hamburg | 10/27 09:00 | 25 | Jeffrey John Wolf v Martin Klizan | Cancelled | |
| Challenger Istanbul | 10/25 10:30 | 29 | [168] Martin Klizan v Ilya Ivashka [129] | 1-6,4-6 | |
| Challenger Istanbul | 10/24 09:55 | 28 | [168] Martin Klizan v Borna Gojo [245] | 6-4,7-5 | |
| Challenger Istanbul | 10/23 08:00 | 27 | [223] Mackenzie McDonald v Martin Klizan [168] | 6-4,4-6,3-6 | |
| Challenger Istanbul | 10/22 08:00 | 26 | [168] Martin Klizan v Roberto Marcora [179] | 7-6,6-1 |