Stadium: Pedro Amadeu Round: 62
| ITF Women Curitiba Qual | 2018/02/18 16:55 | Kukharchuk, Nika v Madison Bourguignon | 6-2,7-6 |
| ITF Women Hammamet | 2018/02/08 10:20 | Kukharchuk, Nika v Burnett, Nastassya | 3-6,3-6 |
| ITF Women Hammamet | 2018/02/06 10:20 | Kukharchuk, Nika v Forys, Weronika Jasmina | 6-0,7-6 |
| ITF Women Hammamet | 2018/02/02 09:45 | Kukharchuk, Nika v Sandra Samir | 5-7,4-6 |
| ITF Women Hammamet | 2018/02/01 10:15 | Kukharchuk, Nika v Arshinkova, Petia | 4-6,6-3,6-3 |
| ITF Women Hammamet | 2018/01/30 09:00 | Kukharchuk, Nika v Puig Caballero, Blanca | 6-2,6-0 |
| ITF Women Hammamet | 2018/01/23 10:25 | Crivelletto, Jessica v Kukharchuk, Nika | 6-3,6-1 |
| ITF Women Luque | 2017/12/23 17:55 | Kukharchuk, Nika v Gonzalez, Montserrat | 6-1,3-6,0-6 |
| ITF Women Curitiba Qual | 2018/02/18 16:35 | Correa, Mariana v Ryngler, Alexa | 0-6,1-6 |
| ITF Women Curitiba Qual | 2018/02/17 14:30 | Tomita, Giovanna v Ryngler, Alexa | 3-6,2-6 |
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/22 16:00 | Ryngler, Alexa v Perper, Alexandra | 6-2,1-6,3-6 |
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/21 16:30 | Ryngler, Alexa v Schaefer, Dominique | 7-6,6-4 |
| ITF Women Orlando Qual | 2018/01/15 15:00 | Olga Danilovic v Ryngler, Alexa | 6-1,6-1 |
| ITF Women Orlando Qual | 2018/01/14 15:00 | Ryngler, Alexa v Coleman, Elizabeth | 6-4,6-1 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/09 14:30 | Gerlach, Katharina v Ryngler, Alexa | 6-1,6-3 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/08 19:30 | Ryngler, Alexa v Emiliana Arango | 6-1,6-3 |