Stadium: Stadium Round: 26
| ITF Women Pelham Qual | 2018/04/10 15:55 | Iga Swiatek v Andrea R Villarreal | 6-0,6-0 |
| ITF Women Pelham Qual | 2018/04/09 15:00 | Maria Jose Portillo Ramirez v Andrea R Villarreal | 6-2,3-6,6-7 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | Leila Koster v Andrea R Villarreal | 0-6,1-6 |
| WTA Monterrey Qual | 2018/03/31 20:25 | Miyu Kato v Andrea R Villarreal | 6-2,6-3 |
| ITF Women Irapuato | 2018/03/13 19:00 | Jacqueline Cako v Andrea R Villarreal | 6-3,3-6,6-1 |
| ITF Women Campinas | 2018/03/06 17:20 | Harmony Tan v Andrea R Villarreal | 6-0,6-0 |
| ITF Women Campinas Qual | 2018/03/05 16:45 | Andrea R Villarreal v Rafaela Rodrigues Dos Santos | 6-7,6-1,6-4 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Andrea R Villarreal v Maria Silva | 6-7,7-6,6-2 |
| ITF Women Tacarigua | 2018/05/08 14:00 | Katarzyna Pitak v Idia Amen | 6-4,6-3 |
| ITF Women Obidos Qual | 2018/04/22 11:30 | Andrea Ka v Katarzyna Pitak | 6-0,7-6 |
| ITF Women Obidos Qual | 2018/04/21 15:00 | Leonor Oliveira v Katarzyna Pitak | 0-6,4-6 |
| ITF Women Loughborough Qual | 2018/02/06 10:00 | Lena Papadakis v Katarzyna Pitak | 6-3,6-0 |
| ITF Women Loughborough Qual | 2018/02/05 10:00 | Katarzyna Pitak v Aleksandra Pitak | 7-5,6-3 |
| ITF Women Shrewsbury Qual | 2017/11/05 15:25 | Alicia Barnett v Katarzyna Pitak | 6-2,6-2 |
| ITF Women Sunderland | 2017/10/31 16:55 | Erin Richardson v Katarzyna Pitak | 2-6,6-2,6-2 |
| ITF Women Sunderland | 2017/10/30 11:00 | Katarzyna Pitak v Nell Miller | 7-6,6-4 |