Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2019/02/20 05:00 | Kalovelonis, Markos v Vilardo, Francesco | 6-2,6-7,4-6 |
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2019/02/19 05:00 | Kalovelonis, Markos v Kiyamov, Timur | 7-5,6-4 |
| ITF - M15 Antalya | 2019/02/05 08:30 | Kalovelonis, Markos v Apostol, Bogdan Ionut | 1-6,3-6 |
| ITF - M15 Antalya | 2019/02/01 07:45 | Damien Wenger v Kalovelonis, Markos | 1-6,4-6 |
| Kazan, Simples M-ITF-RUS-02A | 2019/01/24 08:40 | Betov, Sergey v Kalovelonis, Markos | 6-2,6-3 |
| Kazan, Simples M-ITF-RUS-02A | 2019/01/22 13:45 | Kalovelonis, Markos v Bolotov, Sergey | 6-2,3-6,6-1 |
| ITF Turkey F41 | 2018/12/21 08:45 | Kalovelonis, Markos v Oriol Roca Batalla | 1-6,4-6 |
| ITF Turkey F41 | 2018/12/21 06:00 | Kalovelonis, Markos v Manole, Alexandru Vasile | 6-3,6-3 |
| Toulouse, Singles M-ITF-FRA-05A | 2019/03/05 16:00 | Cayre, Paul v Doumbia, Sadio | 7-5,6-4 |
| ITF M25 Glasgow | 2019/02/19 11:40 | Doumbia, Sadio v Alexander Ritschard | 3-6,4-6 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/14 10:30 | Benjamin Hassan v Doumbia, Sadio | 5-7,6-2,7-6 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/13 14:10 | Lorenzo Musetti v Doumbia, Sadio | 3-6,5-7 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/12 14:45 | Rigele Te v Doumbia, Sadio | 6-4,2-6,2-6 |
| Challenger Budapest | 2019/02/05 14:35 | Galovic, Viktor v Doumbia, Sadio | 7-6,6-2 |
| Challenger Budapest | 2019/02/04 14:10 | Elliot Benchetrit v Doumbia, Sadio | 5-7,0-6 |
| Challenger Launceston | 2019/01/27 23:00 | Doumbia, Sadio v Yuta Shimizu | 3-6,7-5,3-6 |