Stadium: Clay Court 2 Round: 62 Ground: Clay
| ITF W15 Heraklion | 2021/05/25 06:30 | Karen Marthiens v Eliz Maloney | 7-6,6-4 |
| ITF W15 Heraklion | 2021/05/24 08:00 | Karen Marthiens v Marija Semenistaja | 6-4,6-2 |
| ITF W15 Heraklion | 2021/05/19 10:30 | Karen Marthiens v Tamara Malesevic | 1-6,1-6 |
| 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 Heraklion | 2021/05/27 08:00 | Antonia Schmidt v Julia Kimmelmann | 7-6,5-7,3-6 |
| ITF W15 Heraklion | 2021/05/26 11:05 | Helena Stevic v Antonia Schmidt | 2-6,6-2,0-6 |
| ITF W15 Heraklion | 2021/05/25 06:30 | Maelys Bougrat v Antonia Schmidt | 3-6,3-6 |
| ITF W15 Antalya | 2021/04/18 07:00 | Antonia Schmidt v Olivia Moley | 6-0,6-3 |
| ITF W15 Sharm El Sheikh | 2021/03/15 08:00 | Antonia Schmidt v Jenna Defalco | 1-6,2-6 |
| ITF W15 Sharm El Sheikh | 2021/03/14 14:00 | Shria Atturu v Antonia Schmidt | 4-6,3-6 |
| ITF W15 Sharm El Sheikh | 2021/03/08 07:00 | Raphaelle Lacasse v Antonia Schmidt | 6-2,6-4 |
| ITF W15 Sharm El Sheikh | 2021/03/07 09:00 | Marne Dercksen v Antonia Schmidt | 5-7,2-6 |