Stadium: Court 13 Round: 25 Ground: Clay
| ITF W15 Monastir | 2021/08/27 09:30 | Sawayanagi, Riko v 우치지마, 모유카 | 1-6,2-6 |
| ITF W15 Monastir | 2021/08/26 09:10 | 우에다, 라무 v Sawayanagi, Riko | 2-6,6-2,3-6 |
| ITF W15 Monastir | 2021/08/25 16:45 | Sawayanagi, Riko v 비비아니, 마리아 비토리아 | 6-4,6-4 |
| ITF W15 Monastir | 2021/08/24 08:30 | Sawayanagi, Riko v van Poppel, Emma | 6-4,6-0 |
| ITF W15 Monastir | 2021/08/16 16:00 | Sawayanagi, Riko v Aglaya Fedorova | 7-5,0-6,6-10 |
| ITF W15 Antalya | 2021/06/16 10:20 | Sawayanagi, Riko v Aney, Jessie | 5-7,1-6 |
| ITF W15 Antalya | 2021/06/15 07:30 | Sawayanagi, Riko v 세브치코바, 린다 | 6-4,6-2 |
| ITF W15 Antalya | 2021/06/14 07:30 | Sawayanagi, Riko v 마크, 미아 | 6-0,6-0 |
| ITF W15 Cairo | 2021/08/30 08:00 | 아키야마, 미나미 v Miho Kuramochi | 0-6,2-6 |
| ITF W15 Cairo | 2021/08/29 08:00 | Grigoreva , Anna v Miho Kuramochi | 0-6,2-6 |