Estadio: Court 4 Round: 25 Ground: Clay
| ITF W25 Orlando | 2021/11/02 13:55 | Maria Jose Portillo Ramirez v Katja Wiersholm | 6-1,6-3 |
| ITF W25 Orlando | 2021/11/01 17:00 | Maria Jose Portillo Ramirez v Maria Kononova | 6-4,6-1 |
| ITF W25 Austin | 2021/10/26 17:40 | Maria Jose Portillo Ramirez v Liga Dekmeijere | 6-2,4-6,7-10 |
| ITF W25 Austin | 2021/10/25 17:00 | Maria Jose Portillo Ramirez v Rachel Gailis | 6-4,7-5 |
| ITF W15 Cancún | 2021/10/14 17:00 | Rachel Gailis v Maria Jose Portillo Ramirez | 7-5,6-7,7-6 |
| ITF W15 Cancún | 2021/10/13 17:00 | Maria I Yapur Lopez v Maria Jose Portillo Ramirez | 1-6,1-6 |
| ITF W15 Cancún | 2021/10/10 15:30 | Darja Semenistaja v Maria Jose Portillo Ramirez | 5-7,7-6,6-0 |
| ITF W15 Cancún | 2021/10/09 15:00 | Paris Corley v Maria Jose Portillo Ramirez | 2-6,2-6 |
| ITF W25 Austin | 2021/10/27 18:55 | Chieh-Yu Hsu v Kylie Collins | 4-6,3-6 |
| ITF W25 Austin | 2021/10/26 18:30 | Chieh-Yu Hsu v Alexis Blokhina | 6-3,6-1 |
| ITF W25 Austin | 2021/10/25 17:00 | Chieh-Yu Hsu v Dylan Cline | 6-2,6-1 |
| WTA Cleveland | 2021/08/21 17:40 | Alexa Glatch v Chieh-Yu Hsu | 6-2,6-1 |
| ITF W100 Landisville | 2021/08/09 15:35 | Beatriz Haddad Maia v Chieh-Yu Hsu | 6-1,6-0 |
| WTA Concord | 2021/08/01 19:20 | Chieh-Yu Hsu v En Shuo Liang | 1-6,6-4,2-6 |
| ITF W25 Evansville | 2021/07/14 20:00 | Elvina Kalieva v Chieh-Yu Hsu | 6-4,6-2 |
| ITF W25 Sumter | 2021/06/15 13:00 | Chieh-Yu Hsu v Ellie Douglas | 6-3,3-6,5-10 |