Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF W100 Cairo | 2020/02/09 15:55 | Katarzyna Piter v Ana L De La Nuez | 6-3,6-3 |
| ITF W25 Minsk | 2019/11/15 07:00 | Katarzyna Piter v Lucia Bronzetti | 4-6,1-6 |
| ITF W25 Minsk | 2019/11/14 11:10 | Katarzyna Piter v Valeriya Yushchenko | 6-2,6-4 |
| ITF W25 Minsk | 2019/11/13 07:00 | Ylena In-Albon v Katarzyna Piter | 4-6,0-6 |
| ITF W25 Pétange | 2019/11/01 15:30 | Katarzyna Piter v Sofya Lansere | 4-6,3-6 |
| ITF W25 Pétange | 2019/10/31 14:45 | Alexandra Cadantu v Katarzyna Piter | 5-7,6-4,2-6 |
| ITF W25 Pétange | 2019/10/29 15:25 | Katarzyna Piter v Maryna Zanevska | 6-3,7-6 |
| ITF W25 Istanbul | 2019/10/24 09:00 | Anna Kubareva v Katarzyna Piter | 6-2,6-1 |
| ITF W100 Cairo | 2020/02/09 13:15 | Ritage Faizy v Greta Arn | 1-6,0-6 |
| ITF W60 Andrézieux-Bouthéon | 2020/01/27 08:30 | Ekaterine Gorgodze v Greta Arn | 4-6,6-3,11-9 |
| ITF W100 Szekesfehervar | 2019/10/22 08:55 | Greta Arn v Lea Boskovic | 4-6,7-6,12-10 |
| ITF W100 Szekesfehervar | 2019/10/21 11:35 | Julia Grabher v Greta Arn | 7-5,3-6,5-10 |
| ITF W60 Szekesfehervar | 2019/10/16 09:00 | Greta Arn v Katarzyna Kawa | 7-6,2-6,1-6 |
| ITF W25 Roehampton | 2019/09/25 08:30 | Greta Arn v Nuria Parrizas-Diaz | 4-6,1-6 |
| ITF W25 Roehampton | 2019/09/24 08:30 | Greta Arn v Aleksandra Pitak | 6-1,6-0 |
| WTA Nanchang | 2019/09/09 08:30 | Kateryna Baindl v Greta Arn | 6-2,6-1 |