Stadium: Cancha 4 Round: 25 Ground: Clay
| ITF Women Valencia Qual | 2017/11/18 09:30 | Yvonne Cavalle-Reimers v Guillermina Naya | 3-6,5-7 |
| ITF W25 Villa Maria | 2021/03/30 12:25 | Yvonne Cavalle-Reimers v Delfina Glorioso | 6-1,6-0 |
| ITF W25 Buenos Aires | 2021/03/26 19:00 | Yvonne Cavalle-Reimers v Yuki Naito | 2-6,3-6 |
| ITF W25 Buenos Aires | 2021/03/26 13:55 | Beatriz Haddad Maia v Yvonne Cavalle-Reimers | 6-7,6-0,3-6 |
| ITF W25 Buenos Aires | 2021/03/24 17:45 | Yvonne Cavalle-Reimers v Gabriela Ce | 6-2,6-4 |
| ITF W25 Buenos Aires | 2021/03/23 12:30 | Yvonne Cavalle-Reimers v Aurora Zantedeschi | 6-4,4-6,10-4 |
| ITF W25 Buenos Aires | 2021/03/22 14:00 | Yvonne Cavalle-Reimers v Susan Doldan | 6-1,6-1 |
| ITF W25 Buenos Aires | 2021/03/21 12:00 | Yvonne Cavalle-Reimers v Sofia Luini | 6-2,6-0 |
| UTR Pro Tennis Series Barcelona Women | 2021/02/14 09:00 | Irina Maria Bara v Yvonne Cavalle-Reimers | 6-0,6-2 |
| ITF W25 Buenos Aires | 2021/03/23 19:20 | Guillermina Naya v Mell E R Gonzalez | 6-4,0-6,4-6 |
| ITF W15 LPD Gran Canaria | 2020/11/26 11:00 | Anastasia Zarycka v Guillermina Naya | 6-2,6-2 |
| ITF W15 LPD Gran Canaria | 2020/11/25 10:00 | Guillermina Naya v Amanda Carreras | 6-4,4-6,6-4 |
| ITF W15 LPD Gran Canaria | 2020/11/24 10:15 | Guillermina Naya v Helene Pellicano | 2-6,7-5,10-5 |
| ITF W15 LPD Gran Canaria | 2020/11/22 09:30 | Guillermina Naya v Elizaveta Koklina | 6-1,6-2 |
| ITF W25 LPD Gran Canaria | 2020/11/15 12:00 | Leyre Romero Gormaz v Guillermina Naya | 6-7,7-5,10-5 |
| ITF W15 Castellon | 2020/11/03 09:30 | Guillermina Naya v Lucia Cortez Llorca | 6-1,6-3 |
| ITF W15 Platja D'Aro | 2020/10/29 09:00 | Guillermina Naya v Angela Fita Boluda | 3-6,5-7 |