| ITF Women Lubbock | 2018/09/15 14:00 | Douglas, Ellie v Peyton Stearns | 5-7,6-0,6-1 |
| ITF Women Fort Worth | 2018/08/01 15:45 | Olivia Tjandramulia v Douglas, Ellie | 6-1,6-2 |
| ITF Women Dothan Qual | 2018/04/17 15:00 | Di Lorenzo, Francesca v Douglas, Ellie | 6-2,4-6,6-2 |
| ITF Women Dothan Qual | 2018/04/16 16:40 | Douglas, Ellie v Goncalves, Paula Cristina | 6-1,6-1 |
| ITF Women Dothan Qual | 2018/04/15 22:00 | Mara Schmidt v Douglas, Ellie | 2-6,3-6 |
| ITF Women Pelham | 2018/04/11 16:45 | Perper, Alexandra v Douglas, Ellie | 6-2,7-5 |
| ITF Women Pelham Qual | 2018/04/10 15:00 | Ryngler, Alexa v Douglas, Ellie | 2-6,6-2,2-6 |
| ITF Women Pelham Qual | 2018/04/09 15:00 | Okuda, Akiko v Douglas, Ellie | 0-6,0-6 |
| ITF Women Lubbock | 2018/09/15 14:00 | Maria Jose Portillo Ramirez v Schaefer, Dominique | 6-7,5-7 |
| ITF Women Fort Worth | 2018/08/04 16:45 | Maria Mateas v Schaefer, Dominique | 6-0,6-3 |
| ITF Women Fort Worth | 2018/08/03 18:20 | Schaefer, Dominique v Rhiann Newborn | 6-3,6-4 |
| ITF Women Fort Worth | 2018/08/02 14:00 | Olivia Tjandramulia v Schaefer, Dominique | 6-3,2-6,1-6 |
| ITF Women Fort Worth | 2018/07/31 17:20 | Schaefer, Dominique v Okuno, Ayaka | 6-4,6-3 |
| ITF Women Ashland Qual | 2018/07/22 19:25 | Catherine Harrison v Schaefer, Dominique | 6-2,6-2 |
| ITF Women Berkeley Qual | 2018/07/15 21:00 | Schaefer, Dominique v Stevenson, Alexandra | 6-4,4-6,2-6 |
| ITF Women Honolulu | 2018/07/11 20:00 | Schaefer, Dominique v Kolar, Nastja | 6-1,5-7,3-6 |