Stadium: Court 13 Round: 25 Ground: Clay
| ITF W60 Charleston | 2019/09/30 20:10 | Stewart, Katerina v Maria Mateas | 1-6,6-3,3-10 |
| ITF W25 Guayaquil | 2019/08/25 16:00 | Stewart, Katerina v Maria Camila Osorio Serrano | 5-7,3-6 |
| ITF W25 Guayaquil | 2019/08/24 16:00 | Stewart, Katerina v Chieh-Yu Hsu | 6-7,6-3,6-2 |
| ITF W25 Guayaquil | 2019/08/23 18:10 | Villarreal, Andrea Renee v Stewart, Katerina | 2-6,2-6 |
| ITF W25 Guayaquil | 2019/08/22 16:25 | Stewart, Katerina v Victoria Bosio | 6-4,7-5 |
| ITF W25 Guayaquil | 2019/08/21 19:30 | Maria Jose Portillo Ramirez v Stewart, Katerina | 6-3,6-7,0-6 |
| ITF W25 Guayaquil | 2019/08/18 16:00 | Maria Camila Osorio Serrano v Stewart, Katerina | 7-5,7-6 |
| ITF W25 Guayaquil | 2019/08/17 16:00 | Stewart, Katerina v Talaba, Gabriela | 6-2,6-1 |
| ITF W60 Charleston | 2019/10/03 14:00 | Marina Melnikova v Sanesi, Gaia | 6-1,6-3 |
| ITF W60 Charleston | 2019/10/02 16:00 | Sanesi, Gaia v Moore, Tara | 2-6,6-3,7-5 |
| Arad, Singles Qualifying W-ITF-ROU-05A | 2019/09/18 13:35 | Andreea Mitu v Sanesi, Gaia | 6-3,7-5 |
| ITF W25 LPD Gran Canaria | 2019/08/15 10:00 | Marina Bassols Ribera v Sanesi, Gaia | 2-6,6-4,6-1 |
| ITF W25 LPD Gran Canaria | 2019/08/14 15:00 | Sanesi, Gaia v Reka-Luca Jani | 7-5,6-3 |
| Cordenons, Singles Qualifying W-ITF-ITA-22A | 2019/08/07 10:45 | Sanesi, Gaia v Nika Radisic | 1-6,6-4,3-6 |
| ITF W25 Horb | 2019/07/24 11:00 | Stokke, Melanie v Sanesi, Gaia | 6-3,6-4 |
| Biarritz, Singles W-ITF-FRA-11A | 2019/07/18 11:20 | Sanesi, Gaia v Bibiane Schoofs | 6-7,0-6 |