Stadium: Court 7 Round: 54 Ground: Hardcourt indoor
| ITF W15 Lousada | 2021/11/23 14:25 | Guedes, Mafalda v Emma Lene | 2-6,1-6 |
| ITF W25 Santarem | 2021/09/21 12:35 | Daria Snigur v Guedes, Mafalda | 6-0,6-1 |
| ITF W15 Amarante | 2021/07/22 09:00 | Guedes, Mafalda v Mei Yamaguchi | 4-6,0-6 |
| ITF W15 Amarante | 2021/07/21 12:45 | Guedes, Mafalda v Azadinho, Carolina | 6-1,6-1 |
| ITF W25 Porto | 2021/06/20 16:30 | Leire De Ezcurra v Guedes, Mafalda | 2-6,6-4,10-6 |
| ITF W25 Figueira Da Foz | 2021/06/13 09:30 | Freya Christie v Guedes, Mafalda | 6-0,6-1 |
| ITF W25 Oeiras | 2021/04/25 14:00 | Guttierez Carrasco, Maria v Guedes, Mafalda | 6-1,6-1 |
| ITF W25 Oeiras | 2021/04/18 09:00 | Guedes, Mafalda v Olga Parres Azcoitia | 3-6,3-6 |
| ITF W15 Lousada | 2021/11/22 13:00 | Naima Karamoko v Michalitsch, Alina | 6-3,6-2 |
| ITF - W15 Sharm El Sheikh | 2021/11/08 08:00 | Sophie Greiner v Michalitsch, Alina | 7-6,6-3 |
| ITF - W15 Sharm El Sheikh | 2021/11/07 07:00 | Layla Shoukry v Michalitsch, Alina | 1-6,3-6 |
| ITF - W15 Sharm El Sheikh | 2021/11/03 12:50 | Michalitsch, Alina v Matusova, Barbora | 4-6,2-6 |
| ITF - W15 Sharm El Sheikh | 2021/10/26 08:00 | Michalitsch, Alina v Fang An Lin | 4-6,4-6 |
| ITF W15 Bad Waltersdorf | 2021/08/22 09:00 | Michalitsch, Alina v Suchankova, Sara | 3-6,7-5,9-11 |
| ITF W15 Warmbad-Villach | 2021/08/16 12:30 | Ramskogler, Nadja v Michalitsch, Alina | 4-6,6-2,10-7 |
| ITF W15 Warmbad-Villach | 2021/08/16 07:00 | Michalitsch, Alina v Schwartzmann, D. | 7-5,6-2 |