Stadium: Court 20 Round: 26 Ground: Clay
| ITF W15 Cancun | 2021/09/20 17:30 | Anna Rogers v Mckenna Schaefbauer | 3-6,6-4,10-8 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/28 15:00 | Ellie Pittman v Mckenna Schaefbauer | 7-5,6-0 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/26 15:00 | Maya Pitts v Mckenna Schaefbauer | 6-1,5-1 |
| UTR Pro Tennis Series Atlanta Women Qual | 2021/07/25 17:30 | Chiho Mushika v Mckenna Schaefbauer | 6-7,3-6 |
| ITF W25 Pelham | 2021/05/18 14:55 | Mckenna Schaefbauer v Maria Lourdes Carle | 1-6,0-6 |
| ITF W25 Pelham | 2021/05/17 15:00 | Mckenna Schaefbauer v Kelly Williford | 6-2,6-3 |
| ITF W25 Pelham | 2021/05/16 15:00 | Jessie Aney v Mckenna Schaefbauer | 3-6,6-4,7-10 |
| UTR Pro Tennis Series Florida Women | 2021/05/01 14:30 | Mckenna Schaefbauer v Gianna Pielet | 3-6,7-5,3-6 |
| ITF W15 Hilton Head | 2021/10/05 19:20 | Lena Lutzeier v Katerina Stewart | 1-6,1-6 |
| WTA Cluj-Napoca | 2021/08/01 14:10 | Katerina Stewart v Irina Fetecau | 1-6,5-7 |
| ITF W60 Versmold | 2021/07/28 11:00 | Katerina Stewart v Elina Avanesyan | 6-7,4-6 |
| ITF W60 Biarritz | 2021/07/14 08:00 | Stephanie Wagner v Katerina Stewart | 6-0,6-1 |
| ITF W60 Amstelveen | 2021/07/05 10:25 | Katerina Stewart v Alexandra Osborne | 4-6,1-6 |
| ITF W60 Charleston | 2021/06/23 13:30 | Maria Mateas v Katerina Stewart | 6-4,0-6,7-6 |
| ITF W25 Pelham | 2021/05/19 16:00 | Katerina Stewart v Fernanda Contreras Gomez | 1-6,2-6 |
| ITF W100 Bonita Springs | 2021/05/10 18:55 | Katerina Stewart v Ulrikke Eikeri | 5-7,5-7 |