Stadium: Clay Court 1 Round: 25 Ground: Clay
| ITF W15 Heraklion | 2021/05/18 06:30 | Karen Marthiens v Aglaya Zaynieva | 6-2,3-6,11-9 |
| ITF W15 Le Havre | 2021/03/21 14:25 | Anaelle Leclercq v Karen Marthiens | 7-6,6-1 |
| ITF W15 Gonesse | 2021/03/15 12:25 | Karen Marthiens v Julie Belgraver | 0-6,0-6 |
| ITF W15 Gonesse | 2021/03/14 17:35 | Karen Marthiens v Margaux Komano | 6-1,6-2 |
| ITF W15 Amiens | 2021/03/08 08:55 | Mathilde Dury v Karen Marthiens | 6-4,6-1 |
| ITF W15 Amiens | 2021/03/07 09:15 | Valentina Losciale v Karen Marthiens | 6-1,4-6,7-10 |
| ITF W25 Poitiers | 2021/02/22 08:30 | Karen Marthiens v Tayisiya Morderger | 6-1,3-6,6-10 |
| ITF W15 Villena | 2021/02/10 08:30 | Karen Marthiens v Shiho Akita | 3-6,6-3,5-7 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/24 07:30 | Oana Georgeta Simion v Tamara Malesevic | 6-1,6-0 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/22 13:00 | Tamara Malesevic v Georgia Andreea Craciun | 4-6,2-5 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/22 07:00 | Tamara Malesevic v Ioana Gaspar | 3-6,3-5 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/21 12:30 | Tamara Malesevic v Elena-Teodora Cadar | 1-6,4-6 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/19 10:15 | Tamara Malesevic v Alexia Mar'nean | 6-4,6-2 |
| ITF W15 Sharm El Sheikh | 2021/03/22 08:00 | Tamira Paszek v Tamara Malesevic | 7-6,6-2 |
| ITF W15 Sharm El Sheikh | 2021/03/21 08:30 | Elsa Wan v Tamara Malesevic | 5-7,4-6 |
| ITF W15 Sharm El Sheikh | 2021/03/14 10:30 | Jenna Defalco v Tamara Malesevic | 6-2,6-1 |