Stadium: Court 2 Round: 25 Ground: Carpet indoor
| ITF Czech Republic F12 | 2018/11/28 10:15 | Jiri Barnat v Krstev, Ondrej | 0-6,2-6 |
| ITF Czech Republic F10 | 2018/11/15 11:50 | Jiri Barnat v Krstev, Ondrej | 2-6,1-6 |
| Liberec, Simples M-ITF-CZE-08A | 2019/10/24 10:55 | Jiri Barnat v Adrian Bodmer | 6-7,3-6 |
| Olomouc, Singles M-ITF-CZE-07A | 2019/10/16 12:35 | Jiri Barnat v Nazaruk, Dominik | 3-6,4-6 |
| ITF M25 Ricany | 2019/09/24 08:00 | Petr Michnev v Jiri Barnat | 6-0,6-2 |
| ITF M25 Ricany | 2019/09/23 10:30 | Stepan Pecak v Jiri Barnat | 4-6,6-7 |
| ITF M25 Ricany | 2019/09/22 11:30 | Vojtech Vlkovsky v Jiri Barnat | 3-6,5-7 |
| ITF M15 Bratislava | 2019/08/27 08:00 | Liska, Tomas v Jiri Barnat | 6-1,6-1 |
| ITF M15 Bratislava | 2019/08/26 08:00 | Dobry, Martin v Jiri Barnat | 6-7,3-6 |
| ITF M15 Bratislava | 2019/08/25 10:00 | Pietro Mugelli v Jiri Barnat | 1-6,0-6 |
| Olomouc, Singles M-ITF-CZE-07A | 2019/10/17 09:40 | Krstev, Ondrej v Petr Michnev | 3-6,4-6 |
| Olomouc, Singles M-ITF-CZE-07A | 2019/10/16 12:55 | Andrew Paulson v Krstev, Ondrej | 4-6,1-6 |
| Bad Salzdetfurth, Simples M-ITF-GER-14A | 2019/10/10 09:00 | Krstev, Ondrej v Jan Choinski | 4-6,3-6 |
| Bad Salzdetfurth, Simples M-ITF-GER-14A | 2019/10/09 10:20 | Krstev, Ondrej v Jakub Paul | 6-3,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/26 10:35 | Prevosto, Luca v Krstev, Ondrej | 6-1,4-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/25 11:25 | Krstev, Ondrej v Alberto Bronzetti | 6-3,2-6,6-4 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/20 10:30 | Marco Miceli v Krstev, Ondrej | 6-3,6-3 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/09/19 08:30 | Ghorbel, Anis v Krstev, Ondrej | 7-5,3-6,0-6 |