Stadium: ELISAM Group Round: 27 Ground: Hardcourt indoor
| ITF W25 Petange | 2019/10/31 14:45 | Cadantu, Alexandra v Piter, Katarzyna | 5-7,6-4,2-6 |
| ITF W25 Petange | 2019/10/29 15:25 | Piter, Katarzyna v Zanevska, Maryna | 6-3,7-6 |
| ITF W25 Istanbul | 2019/10/24 09:00 | Anna Kubareva v Piter, Katarzyna | 6-2,6-1 |
| ITF W25 Istanbul | 2019/10/23 09:15 | Piter, Katarzyna v Lesley Pattinama Kerkhove | 6-4,7-5 |
| ITF W25 Istanbul | 2019/10/22 13:20 | Piter, Katarzyna v Pribylova, Anastasia | 6-2,4-6,6-2 |
| WTA Luxembourg | 2019/10/13 08:00 | Piter, Katarzyna v Chloe Paquet | 6-7,7-6,3-6 |
| WTA Luxembourg | 2019/10/12 08:45 | Paar, Laura-Ioana v Piter, Katarzyna | 2-6,4-6 |
| ITF W25 Cherbourg | 2019/10/08 16:00 | Harmony Tan v Piter, Katarzyna | 6-3,7-6 |
| ITF W25 Petange | 2019/10/31 09:00 | Sofya Lansere v Lottner, Antonia | 6-4,6-4 |
| ITF W25 Petange | 2019/10/30 12:05 | Knoll, Xenia v Sofya Lansere | 3-6,0-6 |
| ITF W25 Istanbul | 2019/10/21 11:45 | Sofya Lansere v Hogenkamp, Richel | 5-7,5-7 |
| WTA Moscow | 2019/10/12 12:25 | Olga Danilovic v Sofya Lansere | 3-6,6-4,6-0 |
| ITF W60 Meitar | 2019/09/10 07:00 | Sofya Lansere v Simmonds, Chanel | 2-6,2-6 |
| Penza, Singles Qualifying W-ITF-RUS-01B | 2019/08/29 07:00 | Sofya Lansere v Ekaterina Yashina | 6-0,6-3 |
| Penza, Singles Qualifying W-ITF-RUS-01B | 2019/08/28 12:40 | Sofya Lansere v Eva Garkusha | 6-2,6-1 |
| ITF W25 Leipzig | 2019/08/15 09:00 | Sofya Lansere v Olga Danilovic | 1-6,3-6 |