| ITF Women Lubbock | 2016/09/14 15:00 | Eudice Chong v Dvorak, Sarah | 7-6,6-3 |
| ITF Women Evansville | 2017/07/26 16:00 | Stewart, Katerina v Whitney Osuigwe | 1-6,6-3,6-7 |
| ITF Women Evansville | 2017/07/25 14:00 | Lauren Proctor v Stewart, Katerina | 4-6,4-6 |
| ITF Women Evansville | 2017/07/24 14:00 | Iyer, Sharmada v Stewart, Katerina | 0-6,0-6 |
| Naples, Qualifications Simples W-WITF-USA-15A | 2017/05/07 14:30 | Zdrubecka, Dagmar v Stewart, Katerina | 2-6,0-6 |
| ITF Women Waco Qual | 2016/11/07 16:00 | Stewart, Katerina v Amy Zhu | 2-6,2-6 |
| Wimbledon Women Qual | 2015/06/23 14:25 | Stewart, Katerina v Hozumi, Eri | 6-7,5-7 |