Stadium: Court 1 Round: 26 Ground: Clay
| ITF M25 Most | 2019/05/28 13:30 | Ondrej Krstev v Daniel Dutra Da Silva | 6-4,6-3 |
| ITF M15 Antalya | 2019/05/16 07:15 | Ondrej Krstev v Marsel Ilhan | 6-4,4-6,4-6 |
| ITF M15 Antalya | 2019/05/15 07:15 | Ondrej Krstev v Mate Voros | 4-6,6-4,6-4 |
| ITF M15 Tbilisi | 2019/05/02 07:25 | Altug Celikbilek v Ondrej Krstev | 7-6,6-3 |
| ITF M15 Tbilisi | 2019/05/01 06:00 | Ondrej Krstev v Sarp Agabigun | 4-6,6-2,6-4 |
| ITF M15 Opatija | 2019/03/26 13:20 | Benjamin Pietri v Ondrej Krstev | 7-6,2-6,6-0 |
| ITF M15 Rovinj | 2019/03/19 10:30 | Ondrej Krstev v Matej Sabanov | 3-6,5-7 |
| ITF M15 Kaarst | 2019/02/07 17:35 | Ondrej Krstev v Samuele Ramazzotti | 4-6,3-6 |
| ITF M25 Most | 2019/05/29 08:00 | Jiri Barnat v Jacob Grills | 3-6,2-6 |
| ITF M25 Jablonec Nad Nisou | 2019/05/23 11:30 | Patrik Rikl v Jacob Grills | 6-1,2-6,6-3 |
| Challenger Samarkand | 2019/05/14 05:00 | Jacob Grills v Dmitry Popko | 3-6,6-7 |
| Challenger Shymkent | 2019/05/07 05:40 | Andrej Martin v Jacob Grills | 6-0,6-2 |
| Challenger Shymkent | 2019/05/06 05:30 | Julian Lenz v Jacob Grills | 3-6,4-6 |
| Challenger Seoul | 2019/04/30 03:25 | Yan Bai v Jacob Grills | 6-4,6-1 |
| Challenger Seoul | 2019/04/29 02:00 | Zihao Xia v Jacob Grills | 3-6,7-6,3-6 |
| Challenger Nanchang | 2019/04/24 03:00 | Jordan Thompson v Jacob Grills | 6-3,4-6,6-1 |