| ITF Women Figueira Da Foz | 2018/07/17 14:40 | Ueda, Ramu v Koehler, Maria Joao | 7-5,6-3 |
| ITF Women Setubal | 2018/07/12 09:30 | Sarah Rebecca Sekulic v Koehler, Maria Joao | 0-6,7-6,6-3 |
| ITF Women Setubal | 2018/07/10 11:20 | Koehler, Maria Joao v Zakarlyuk, Marianna | 6-2,5-7,6-2 |
| ITF Women Guimaraes | 2018/07/01 13:00 | Koehler, Maria Joao v Zeel Desai | 6-1,3-6,6-1 |
| ITF Women Guimaraes | 2018/06/29 10:00 | Gravouil, Theo v Koehler, Maria Joao | 2-6,2-6 |
| ITF Women Guimaraes | 2018/06/28 10:00 | Karola Patricia Bejenaru v Koehler, Maria Joao | 3-6,1-6 |
| ITF Women Guimaraes | 2018/06/27 11:45 | Bertschmann, Stephanie v Koehler, Maria Joao | 0-6,0-6 |
| ITF Women Amarante | 2018/06/20 09:00 | Koehler, Maria Joao v Olga Helmi | 3-6,2-6 |
| ITF Women Don Benito | 2018/07/16 12:15 | Nuria Brancaccio v Natsuho Arakawa | 6-1,6-4 |
| ITF Women Aschaffenburg Qual | 2018/07/01 08:00 | Niedmers, Nora v Natsuho Arakawa | 1-6,6-4,6-3 |
| ITF Women Taipei | 2017/06/18 01:30 | Kajitani, Robu v Natsuho Arakawa | 6-2,6-1 |
| ITF Women Gimcheon | 2017/06/13 02:30 | Yea, Hyojung v Natsuho Arakawa | 6-2,6-3 |
| ITF Women Gimcheon | 2017/06/12 02:00 | Sim, Sol Hee v Natsuho Arakawa | 6-4,3-6,0-6 |
| ITF Women Gimcheon | 2017/06/11 02:00 | Natsuho Arakawa v Lee, Han-Bit | 6-4,6-3 |
| ITF Women Nashville Qual | 2016/11/20 19:30 | Natsuho Arakawa v Christina Rosca | 2-6,6-3,1-6 |