Stadium: Court 7 Round: 25 Ground: Clay
| ITF W15 Cairo | 2021/09/06 08:30 | Riko Sawayanagi v Matilde Mariani | 5-7,1-6 |
| ITF W15 Cairo | 2021/09/03 08:00 | Riko Sawayanagi v Lavinia Tanasie | 3-6,6-7 |
| ITF W15 Cairo | 2021/09/02 08:00 | Gaia Squarcialupi v Riko Sawayanagi | 6-3,3-6,0-6 |
| ITF W15 Cairo | 2021/09/01 08:00 | Riko Sawayanagi v Miho Kuramochi | 6-2,6-3 |
| ITF W15 Monastir | 2021/08/27 09:30 | Riko Sawayanagi v Moyuka Uchijima | 1-6,2-6 |
| ITF W15 Monastir | 2021/08/26 09:10 | Ramu Ueda v Riko Sawayanagi | 2-6,6-2,3-6 |
| ITF W15 Monastir | 2021/08/25 16:45 | Riko Sawayanagi v Maria Vittoria Viviani | 6-4,6-4 |
| ITF W15 Monastir | 2021/08/24 08:30 | Riko Sawayanagi v Emma Van Poppel | 6-4,6-0 |