Stadium: Court 12 Round: 25 Ground: Clay
| ITF W60 Charleston | 2019/10/03 14:00 | Maria Mateas v Mari Osaka | 6-1,7-6 |
| ITF W60 Charleston | 2019/10/01 18:50 | Hanyu Guo v Mari Osaka | 4-6,1-6 |
| ITF W60 Saint-Malo | 2019/09/17 13:25 | Mari Osaka v Lucie Wargnier | 4-6,2-6 |
| ITF W25 St. Poelten | 2019/09/10 10:05 | Mari Osaka v Caroline Werner | 2-6,1-6 |
| ITF W60 Montreux | 2019/09/06 14:50 | Alice Rame v Mari Osaka | 6-0,6-4 |
| ITF W60 Montreux | 2019/09/05 10:30 | Mari Osaka v Mandy Minella | 6-1,3-6,6-4 |
| ITF W60 Montreux | 2019/09/04 08:00 | Fiona Ganz v Mari Osaka | 4-6,2-6 |
| ITF W25 Guayaquil | 2019/08/21 15:00 | Mari Osaka v Camila Romero | 6-2,5-7,4-6 |
| ITF W60 Charleston | 2019/10/02 18:40 | Barbara Gatica v Maria Camila Osorio | 4-6,2-6 |
| ITF W60 Charleston | 2019/10/01 16:20 | Barbara Gatica v Angelina Gabueva | 6-4,2-6,11-9 |
| ITF W60 Charleston | 2019/09/30 19:20 | Barbara Gatica v Sarah Lee | 6-3,6-2 |
| ITF W15 São Paulo | 2019/09/28 14:15 | Thaisa Grana Pedretti v Barbara Gatica | 6-1,4-6,6-3 |
| ITF W15 São Paulo | 2019/09/27 14:00 | Romina Ccuno v Barbara Gatica | 0-6,1-6 |
| ITF W15 São Paulo | 2019/09/26 16:55 | Ivania Martinich v Barbara Gatica | 5-7,7-5,3-6 |
| ITF W15 São Paulo | 2019/09/24 14:05 | Althea Hudson v Barbara Gatica | 2-6,0-6 |
| ITF W25 Guayaquil | 2019/08/21 17:05 | Barbara Gatica v Alexandra Osborne | 4-6,6-3,5-7 |