Stadium: Court 14 Round: 25 Ground: Clay
| ITF Women Marbella | 2018/09/04 08:00 | Guillermina Naya v Victoria Mikhaylova | 1-6,3-6 |
| ITF Women Hammamet | 2018/03/15 10:55 | Julia Stamatova v Guillermina Naya | 6-3,7-5 |
| ITF Women Hammamet | 2018/03/13 12:00 | Guillermina Naya v Federica Arcidiacono | 4-6,6-3,6-3 |
| ITF Women Hammamet | 2018/03/07 11:25 | Guillermina Naya v Michele Alexandra Zmau | 0-6,0-6 |
| ITF Women Hammamet | 2018/02/28 11:45 | Nastassja Burnett v Guillermina Naya | 6-7,6-2,6-2 |
| ITF Women Santiago | 2017/12/05 14:00 | Nathaly Kurata v Guillermina Naya | 3-6,6-4,6-2 |
| ITF Women Castellon | 2017/11/28 11:40 | Irene Burillo Escorihuela v Guillermina Naya | 3-6,6-0,6-2 |
| ITF Women Valencia | 2017/11/20 14:40 | Guillermina Naya v Miriam Bulgaru | 5-7,3-6 |
| ITF Women Dijon | 2018/07/22 08:30 | Michaela Bayerlova v Katharine Fahey | 6-7,4-6 |
| ITF Women Dijon | 2018/07/21 12:00 | Michaela Bayerlova v Emmanuelle Salas | 6-2,2-6,7-6 |
| ITF Women Dijon | 2018/07/20 08:00 | Michaela Bayerlova v Pauline Payet | 6-4,6-0 |
| ITF Women Dijon | 2018/07/18 14:00 | Michaela Bayerlova v Margaux Rouvroy | 6-4,6-2 |
| ITF Women Dijon | 2018/07/16 12:30 | Michaela Bayerlova v Eva Marie Voracek | 6-3,6-1 |
| ITF Women Torino | 2018/07/11 12:15 | Andreea Amalia Rosca v Michaela Bayerlova | 6-2,6-2 |
| ITF Women Torino | 2018/07/10 08:30 | Camila Giangreco Campiz v Michaela Bayerlova | 3-6,4-6 |
| ITF Women Torino Qual | 2018/07/09 08:00 | Anna-Giulia Remondina v Michaela Bayerlova | 4-6,2-6 |