| ITF W25 Pune | 12/24 05:00 | 28 | [466] Ekaterina Reyngold v Diana Marcinkevica [358] | 3-6,6-4,6-7 | |
| ITF W25 Pune | 12/23 04:30 | 27 | [358] Diana Marcinkevica v Valeriya Strakhova [426] | 7-5,7-6 | |
| ITF W25 Pune | 12/22 04:00 | 26 | [358] Diana Marcinkevica v Zhibek Kulambayeva [396] | 6-2,6-3 | |
| ITF W25 Pune | 12/21 08:20 | 25 | Diana Marcinkevica v Nidhi Chilumula | 6-0,6-1 | |
| ITF W25 Selva Gardena | 12/04 09:00 | 26 | Diana Marcinkevica v Seone Mendez | Walkover | |
| ITF W25 Selva Gardena | 11/29 15:45 | 25 | [350] Diana Marcinkevica v Eudice Chong [260] | 6-1,7-6 | |
| ITF W25 Ortisei | 11/24 08:30 | 26 | [353] Diana Marcinkevica v Timea Babos [161] | 4-6,4-6 | |
| ITF W25 Ortisei | 11/23 09:00 | 25 | Diana Marcinkevica v Zeynep Sonmez | 6-1,6-4 | |
| ITF W25 Petange | 11/18 10:00 | 26 | [353] Diana Marcinkevica v Sada Nahimana [333] | 6-7,0-6 | |
| ITF W25 Petange | 11/16 12:35 | 25 | Marie Weckerle v Diana Marcinkevica | 1-6,2-6 | |
| ITF W60 Nantes | 11/03 11:00 | 25 | [358] Diana Marcinkevica v Daniela Vismane [313] | 0-6,5-7 | |
| ITF W60 Nantes | 11/01 12:30 | 54 | [345] Sada Nahimana v Diana Marcinkevica [358] | 6-4,6-4 | |
| ITF W60 Nantes | 10/31 15:10 | 54 | Angelina Gabueva v Diana Marcinkevica | 3-6,4-6 | |
| ITF W80 Les Franqueses | 10/25 11:35 | 44 | Lena Papadakis v Diana Marcinkevica | 7-5,6-2 | |
| ITF W80 Les Franqueses | 10/24 14:35 | 44 | Caroline Romeo v Diana Marcinkevica | 1-6,4-6 | |
| ITF W25 Seville | 10/20 08:30 | 26 | [344] Tena Lukas v Diana Marcinkevica [351] | 6-2,6-0 | |
| ITF W25 Seville | 10/19 08:30 | 25 | Diana Marcinkevica v Yeonwoo Ku | 3-6,6-1,7-6 | |
| ITF W25 Lagos | 10/14 12:10 | 26 | [250] Isabella Shinikova v Diana Marcinkevica [354] | 6-3,7-5 | |
| ITF W25 Lagos | 10/13 11:25 | 25 | [354] Diana Marcinkevica v Weronika Falkowska [401] | 7-6,6-2 | |
| ITF W25 Loule | 10/05 13:10 | 25 | [213] Jessika Ponchet v Diana Marcinkevica [354] | 7-5,6-3 | |
| ITF W25 Lisbon | 09/27 14:00 | 25 | Diana Marcinkevica v Yvonne Cavalle-Reimers | 3-6,4-6 | |
| ITF W80 Wiesbaden | 09/20 15:00 | 54 | [327] Lina Gjorcheska v Diana Marcinkevica [355] | 6-4,6-1 | |
| ITF W80 Wiesbaden | 09/20 08:00 | 54 | Mara Guth v Diana Marcinkevica | 6-7,2-6 | |
| ITF W60 Montreux | 09/08 09:15 | 25 | [314] Diana Marcinkevica v Susan Bandecchi [226] | 4-6,1-6 | |
| ITF W60 Collonge-Bellerive | 09/01 10:40 | 25 | [314] Diana Marcinkevica v Estelle Cascino [494] | 4-6,4-6 | |
| ITF W25 Verbier | 08/25 07:55 | 25 | Ekaterina Makarova v Diana Marcinkevica | 2-6,6-1,6-3 | |
| ITF W25 Radom | 08/11 11:05 | 25 | [250] Anastasia Zakharova v Diana Marcinkevica [308] | 6-1,6-4 | |
| ITF W25 Bydgoszcz | 08/04 09:15 | 25 | Diana Marcinkevica v Nastasja M Schunk | 1-6,0-6 | |
| ITF W60 Grodzisk Mazowiecki | 07/28 08:00 | 25 | [314] Diana Marcinkevica v Maria Lourdes Carle [328] | 2-6,2-6 | |
| ITF W25 Les Contamines | 07/22 11:25 | 26 | Diana Marcinkevica v Emeline Dartron | 6-7,6-4,2-6 |