Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF W15 Sharm El Sheikh | 2021/03/25 08:40 | Dalila Spiteri v Katyarina Paulenka | 6-2,6-1 |
| ITF W15 Sharm El Sheikh | 2021/03/24 12:15 | Barbora Matusova v Katyarina Paulenka | 6-7,2-6 |
| ITF W15 Sharm El Sheikh | 2021/03/23 07:00 | Lauren Proctor v Katyarina Paulenka | 4-6,0-6 |
| ITF W15 Sharm El Sheikh | 2021/03/22 10:00 | Aline Thommen v Katyarina Paulenka | 6-7,0-6 |
| ITF W15 Sharm El Sheikh | 2021/03/21 12:30 | Nadine Keller v Katyarina Paulenka | 4-6,1-6 |
| ITF W15 Shymkent | 2021/02/09 10:20 | Katyarina Paulenka v Tatyana Nikolenko | 3-6,2-6 |
| ITF W15 Shymkent | 2021/02/04 04:00 | Katyarina Paulenka v Daria Mishina | 1-6,3-6 |
| ITF W15 Shymkent | 2021/02/03 06:25 | Katyarina Paulenka v Mariya Dolzhenko | 7-6,6-1 |
| ITF W25 Hamamatsu | 2019/10/16 01:00 | Paula Badosa v Riko Sawayanagi | 6-4,6-1 |
| ITF Women Hamamatsu | 2018/10/20 03:15 | Riko Sawayanagi v Mana Ayukawa | 1-6,3-6 |
| ITF Women Hamamatsu | 2018/10/19 03:40 | Susan Bandecchi v Riko Sawayanagi | 5-7,4-6 |
| ITF Women Hamamatsu | 2018/10/18 01:00 | Riko Sawayanagi v Miyabi Inoue | 6-3,4-6,6-3 |
| ITF Women Hamamatsu | 2018/10/17 04:10 | Riko Sawayanagi v Kisa Yoshioka | 6-1,6-1 |
| ITF Women Nanao | 2018/08/29 06:40 | Shiho Akita v Riko Sawayanagi | 6-7,6-1,7-5 |
| ITF Women Tsukuba | 2018/08/21 00:30 | Riko Sawayanagi v Momoko Kobori | 4-6,3-6 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Riko Sawayanagi v Mayu Iwai | 6-0,1-6,2-6 |