Stadium: Court 1 Round: 25 Ground: Clay
| ITF Women Andrezieux-Boutheon Qual | 2017/01/21 15:45 | Nina Stadler v Diana Marcinkevica | 7-5,6-3 |
| ITF W25 Oeiras | 2021/04/28 10:00 | Gabriela Ce v Nina Stadler | 2-6,3-6 |
| ITF W25 Oeiras | 2021/04/27 13:30 | Nina Stadler v Miyabi Inoue | 6-3,6-2 |
| ITF W60 Bellinzona | 2021/04/04 07:55 | Nina Stadler v Margot Yerolymos | 0-6,5-7 |
| ITF W15 Antalya | 2021/03/30 10:45 | Rosa Vicens Mas v Nina Stadler | 6-0,6-3 |
| ITF W15 Antalya | 2021/03/26 09:05 | Ziva Falkner v Nina Stadler | 6-2,3-6,6-1 |
| ITF W15 Antalya | 2021/03/25 08:30 | Ekaterina Ovcharenko v Nina Stadler | 2-6,2-6 |
| ITF W15 Manacor | 2021/03/11 10:50 | Leyre Romero Gormaz v Nina Stadler | 2-6,7-5,6-2 |
| ITF W15 Manacor | 2021/03/10 14:04 | Nina Stadler v Jade Bornay | 7-5,6-2 |
| ITF W25 Oeiras | 2021/04/28 11:30 | Martina Spigarelli v Diana Marcinkevica | 6-7,1-6 |
| ITF W25 Oeiras | 2021/04/19 12:30 | Sofya Lansere v Diana Marcinkevica | 6-3,6-3 |
| ITF W25 Cordoba | 2021/04/06 15:50 | Irene Burillo Escorihuela v Diana Marcinkevica | 6-4,6-3 |
| ITF W25 Villa Maria | 2021/03/30 17:55 | Despina Papamichail v Diana Marcinkevica | 1-6,7-6,6-3 |
| ITF W25 Buenos Aires | 2021/03/24 16:10 | Katharina Gerlach v Diana Marcinkevica | 6-0,6-1 |
| ITF W15 Manacor | 2021/03/12 09:00 | Leyre Romero Gormaz v Diana Marcinkevica | 7-6,2-6,6-4 |
| ITF W15 Manacor | 2021/03/11 10:50 | Tereza Mihalikova v Diana Marcinkevica | 2-6,2-6 |
| ITF W15 Manacor | 2021/03/10 11:10 | Maria G Carrasco v Diana Marcinkevica | 4-6,4-6 |