Stadium: Court 1 Round: 27 Ground: Clay
| WTA Hertogenbosch Qual | 2018/06/09 09:50 | Katarzyna Piter v Barbara Haas | 6-3,6-4 |
| ITF W25 Prague | 2019/08/29 12:25 | Barbara Haas v Amanda Carreras | 6-0,7-5 |
| ITF W25 Prague | 2019/08/28 13:20 | Barbara Haas v Nikola Tomanova | 6-3,6-3 |
| US Open Women | 2019/08/19 20:00 | Xinyu Wang v Barbara Haas | 6-1,5-7,6-2 |
| ITF W60 Hechingen | 2019/08/11 11:30 | Olga Danilovic v Barbara Haas | 2-6,1-6 |
| ITF W60 Hechingen | 2019/08/10 14:30 | Barbara Haas v Lea Boskovic | 4-6,7-6,6-3 |
| ITF W60 Hechingen | 2019/08/09 15:00 | Laura Schaeder v Barbara Haas | 2-6,1-6 |
| ITF W60 Hechingen | 2019/08/08 15:00 | Jule Niemeier v Barbara Haas | 1-6,3-6 |
| ITF W60 Hechingen | 2019/08/08 10:00 | Alexandra Vecic v Barbara Haas | 3-6,4-6 |
| ITF W25 Prague | 2019/08/28 09:50 | Julie Gervais v Katarzyna Piter | 4-6,5-7 |
| ITF W25 Braunschweig | 2019/08/22 13:30 | Cagla Buyukakcay v Katarzyna Piter | 4-6,6-4,6-3 |
| ITF W25 Braunschweig | 2019/08/21 15:00 | Romy Koelzer v Katarzyna Piter | 4-6,6-4,6-7 |
| ITF W60 Warsaw | 2019/08/08 10:00 | Katarzyna Piter v Yue Yuan | 5-7,3-6 |
| ITF W60 Warsaw | 2019/08/07 08:00 | Katarzyna Piter v Maryna Chernyshova | 6-3,6-4 |
| ITF W25 Grodzisk Mazowiecki | 2019/08/03 12:30 | Maja Chwalinska v Katarzyna Piter | 6-2,6-2 |
| ITF W25 Grodzisk Mazowiecki | 2019/08/02 13:40 | Katarzyna Piter v Ulrikke Eikeri | 6-3,7-6 |
| ITF W25 Grodzisk Mazowiecki | 2019/08/01 13:40 | Katarzyna Piter v Viktoriia Dema | 6-2,6-1 |