| ITF M15 Aktobe | 03/16 06:00 | 28 | Simakin, Ilia v Ostapenkov, Daniil | 6-3,6-4 | |
| ITF M15 Aktobe | 03/15 06:00 | 27 | Ostapenkov, Daniil v Artur Kukasian | 6-1,6-3 | |
| ITF M15 Aktobe | 03/14 07:45 | 26 | 비스커, 니엘스 v Ostapenkov, Daniil | 4-6,4-6 | |
| ITF M15 Aktobe | 03/13 11:10 | 25 | Ibrakhimov, Rakhimbek v Ostapenkov, Daniil | 5-7,6-4,2-6 | |
| ITF M15 Aktobe | 03/06 05:00 | 25 | Ostapenkov, Daniil v Nesterov, Petr | 1-6,6-7 | |
| ITF M25 Sharm El Sheikh | 09/20 07:00 | 25 | Ostapenkov, Daniil v 구에리에리, 안드레아 | 6-7,0-6 | |
| ITF M25 Monastir | 09/16 08:30 | 28 | Bertrand, Robin v Ostapenkov, Daniil | 6-2,6-0 | |
| ITF M25 Monastir | 09/15 08:30 | 27 | Daniel Khazime v Ostapenkov, Daniil | 4-6,4-6 | |
| ITF M25 Monastir | 09/14 08:30 | 26 | 레이타노, 스테파노 v Ostapenkov, Daniil | 2-6,5-7 | |
| ITF M25 Monastir | 09/13 08:30 | 25 | Ostapenkov, Daniil v Ilya Snitari | 7-5,6-3 | |
| ITF M25 Monastir | 09/08 08:30 | 27 | Ostapenkov, Daniil v van Wyk, Kris | 3-6,2-6 | |
| ITF M25 Monastir | 09/07 10:30 | 26 | Ostapenkov, Daniil v 마울레노브, 티무르 | 6-1,6-1 | |
| ITF M25 Monastir | 09/06 08:30 | 25 | 오우카, 아지즈 v Ostapenkov, Daniil | Retired | |
| ITF M15 Novi Sad | 07/31 15:40 | 62 | Ostapenkov, Daniil v 푸스칼, 사무엘 | 3-6,4-6 | |
| ITF M15 Novi Sad | 07/31 07:00 | 62 | Ostapenkov, Daniil v Formella, Leon | 6-1,6-2 | |
| ITF M15 Novi Sad | 07/23 07:00 | 62 | Ostapenkov, Daniil v Milanovic, Dusan | 3-6,2-6 | |
| ITF M15 Shanghai | 07/12 06:45 | 25 | Ostapenkov, Daniil v 왕, 추캉 | Retired | |
| ITF M15 Tianjin | 07/08 01:30 | 28 | 리, 저 v Ostapenkov, Daniil | 6-3,6-4 | |
| ITF M15 Tianjin | 07/07 01:30 | 27 | Ostapenkov, Daniil v 왕, 추캉 | 6-7,6-4,6-4 | |
| ITF M15 Tianjin | 07/06 01:30 | 26 | [337] 리아오넨카, 알리아크산들 v Ostapenkov, Daniil [488] | 1-6,2-6 | |
| ITF M15 Tianjin | 07/04 07:35 | 25 | 모, 예충 v Ostapenkov, Daniil | 2-6,4-6 | |
| ITF M15 Tbilisi | 05/02 08:20 | 25 | [268] 엘리스, 블랙 v Ostapenkov, Daniil [496] | 6-4,7-6 | |
| ITF M25 Tbilisi | 05/01 06:00 | 54 | Ostapenkov, Daniil v 일켈, 베르크 | 7-5,6-7,10-3 | |
| ITF M25 Tbilisi | 04/26 07:30 | 25 | Ostapenkov, Daniil v Ron Ellouck | 2-6,4-6 | |
| ITF M25 Tbilisi | 04/25 09:00 | 44 | Ostapenkov, Daniil v Temirhanov, Arslanbek | 6-3,6-1 | |
| ITF M25 Tbilisi | 04/24 08:00 | 44 | Ostapenkov, Daniil v 주케르만, 니브 | 6-2,7-6 | |
| ITF M15 Monastir | 04/07 08:30 | 27 | 로드리구에스, 다니엘 v Ostapenkov, Daniil | 1-6,6-3,6-2 | |
| ITF M15 Monastir | 04/06 08:30 | 26 | Ostapenkov, Daniil v 비토운 코우즈민, 콘스탄틴 | 7-6,4-6,6-3 | |
| ITF M15 Monastir | 04/05 11:55 | 25 | Ostapenkov, Daniil v Florig, Philip | 6-4,6-3 | |
| ITF M15 Monastir | 04/04 13:55 | 62 | Ostapenkov, Daniil v Amaan Siddiqui | 6-0,6-1 |