Stadium: Court 9 Round: 28 Ground: Hardcourt indoor
| ITF - M15 Antalya | 2019/03/07 07:00 | Denis Klok v Nedelko, Ivan | 1-6,4-6 |
| ITF M15 Vilnius | 2019/07/12 08:00 | Nedelko, Ivan v Podzus, Martins | 3-6,7-6,6-2 |
| ITF M15 Vilnius | 2019/07/11 08:00 | Nedelko, Ivan v Minin, Matvey | 6-1,7-6 |
| ITF M15 Vilnius | 2019/07/09 10:30 | Nedelko, Ivan v Tadas Babelis | 6-0,1-6,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/29 08:30 | Pol Martin Tiffon v Nedelko, Ivan | 6-2,4-6,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/28 10:30 | Bondarevskiy, Yan v Nedelko, Ivan | 5-7,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/27 08:00 | Pierre Delage v Nedelko, Ivan | 4-6,4-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/26 08:00 | Lorenzo Bocchi v Nedelko, Ivan | 6-7,4-6 |
| Plovdiv, Singles Qualifying M-ITF-BUL-03A | 2019/06/05 07:40 | Jonathan Mridha v Nedelko, Ivan | 6-4,6-0 |
| ITF M15 Vilnius | 2019/07/12 10:55 | Georgii Kravchenko v Denis Klok | 1-6,2-6 |
| ITF M15 Vilnius | 2019/07/11 10:20 | Denis Klok v Bogdan Bobrov | 6-4,6-2 |
| ITF M15 Vilnius | 2019/07/09 13:10 | Denis Klok v Karl Friberg | 6-2,6-3 |
| ITF M15 Belgrade | 2019/07/03 11:55 | Denis Klok v Bogdan Pavel | 6-4,4-6,4-6 |
| Kaltenkirchen, Singles Qualifying M-ITF-GER-05A | 2019/06/11 11:00 | Frawley, James v Denis Klok | 6-0,2-6,6-1 |
| Kaltenkirchen, Singles Qualifying M-ITF-GER-05A | 2019/06/10 15:00 | Denis Klok v Matthew Dellavedova | 6-2,6-3 |
| Kaltenkirchen, Singles Qualifying M-ITF-GER-05A | 2019/06/10 08:00 | Denis Klok v Moerl, Benedict | 6-2,6-0 |
| Karlsruhe, Singles M-ITF-GER-04A | 2019/06/04 09:00 | Denis Klok v Justin Roberts | 1-6,1-6 |