| ITF - Navi Mumbai W25 | 01/01 04:30 | 28 | Diana Marcinkevica v Naho Sato | 6-2,7-5 | |
| ITF - Navi Mumbai W25 | 12/31 04:30 | 27 | Zeel Desai v Diana Marcinkevica | 6-7,4-6 | |
| ITF - Navi Mumbai W25 | 12/30 04:00 | 26 | Sowjanya Bavisetti v Diana Marcinkevica | 7-6,4-6,1-6 | |
| ITF - Navi Mumbai W25 | 12/28 05:00 | 25 | Shrivalli R Bhamidipaty v Diana Marcinkevica | 2-6,4-6 | |
| ITF - Pune W25 | 12/25 05:00 | 29 | [358] Diana Marcinkevica v Moyuka Uchijima [443] | 2-6,5-7 | |
| ITF - Pune W25 | 12/24 05:00 | 28 | [466] Ekaterina Reyngold v Diana Marcinkevica [358] | 3-6,6-4,6-7 | |
| ITF - Pune W25 | 12/23 04:30 | 27 | [358] Diana Marcinkevica v Valeriya Strakhova [426] | 7-5,7-6 | |
| ITF - Pune W25 | 12/22 04:00 | 26 | [358] Diana Marcinkevica v Zhibek Kulambayeva [396] | 6-2,6-3 | |
| ITF - Pune W25 | 12/21 08:20 | 25 | Diana Marcinkevica v Nidhi Chilumula | 6-0,6-1 | |
| ITF - Selva Gardena W25 | 12/04 09:00 | 26 | Diana Marcinkevica v Seone Mendez | Walkover | |
| ITF - Selva Gardena W25 | 11/29 15:45 | 25 | [350] Diana Marcinkevica v Eudice Chong [260] | 6-1,7-6 | |
| ITF - Ortisei W25 | 11/24 08:30 | 26 | [353] Diana Marcinkevica v Timea Babos [161] | 4-6,4-6 | |
| ITF - Ortisei W25 | 11/23 09:00 | 25 | Diana Marcinkevica v Zeynep Sonmez | 6-1,6-4 | |
| ITF - Petange W25 | 11/18 10:00 | 26 | [353] Diana Marcinkevica v Sada Nahimana [333] | 6-7,0-6 | |
| ITF - Petange W25 | 11/16 12:35 | 25 | Marie Weckerle v Diana Marcinkevica | 1-6,2-6 | |
| ITF - Nantes W60 | 11/03 11:00 | 25 | [358] Diana Marcinkevica v Daniela Vismane [313] | 0-6,5-7 | |
| ITF - Nantes W60 | 11/01 12:30 | 54 | [345] Sada Nahimana v Diana Marcinkevica [358] | 6-4,6-4 | |
| ITF - Nantes W60 | 10/31 15:10 | 54 | Angelina Gabueva v Diana Marcinkevica | 3-6,4-6 | |
| ITF - Les Franqueses W80 | 10/25 11:35 | 44 | Lena Papadakis v Diana Marcinkevica | 7-5,6-2 | |
| ITF - Les Franqueses W80 | 10/24 14:35 | 44 | Caroline Romeo v Diana Marcinkevica | 1-6,4-6 | |
| ITF - Seville W25 | 10/20 08:30 | 26 | [344] Tena Lukas v Diana Marcinkevica [351] | 6-2,6-0 | |
| ITF - Seville W25 | 10/19 08:30 | 25 | Diana Marcinkevica v Yeonwoo Ku | 3-6,6-1,7-6 | |
| ITF - Lagos W25 | 10/14 12:10 | 26 | [250] Isabella Shinikova v Diana Marcinkevica [354] | 6-3,7-5 | |
| ITF - Lagos W25 | 10/13 11:25 | 25 | [354] Diana Marcinkevica v Weronika Falkowska [401] | 7-6,6-2 | |
| ITF - Loule W25 | 10/05 13:10 | 25 | [213] Jessika Ponchet v Diana Marcinkevica [354] | 7-5,6-3 | |
| ITF - Lisbon W25 | 09/27 14:00 | 25 | Diana Marcinkevica v Yvonne Cavalle-Reimers | 3-6,4-6 | |
| ITF - Wiesbaden W80 | 09/20 15:00 | 54 | [327] Lina Gjorcheska v Diana Marcinkevica [355] | 6-4,6-1 | |
| ITF - Wiesbaden W80 | 09/20 08:00 | 54 | Mara Guth v Diana Marcinkevica | 6-7,2-6 | |
| ITF - Montreux W60 | 09/08 09:15 | 25 | [314] Diana Marcinkevica v Susan Bandecchi [226] | 4-6,1-6 | |
| ITF - Collonge-Bellerive W60 | 09/01 10:40 | 25 | [314] Diana Marcinkevica v Estelle Cascino [494] | 4-6,4-6 |