Stadium: Court 5 Round: 54
| ITF Women Ashland Qual | 2018/07/22 22:05 | Mueller, Alexandra v Small, Rosalyn | 6-0,6-0 |
| ITF Women Manchester Qual | 2018/06/11 13:55 | Mueller, Alexandra v Mariam Bolkvadze | 2-6,0-6 |
| ITF Women Manchester Qual | 2018/06/10 12:30 | Mueller, Alexandra v Staff, Holly | 6-1,6-3 |
| ITF Women Surbiton Qual | 2018/06/02 14:00 | Neel, Ingrid v Mueller, Alexandra | 6-0,6-3 |
| ITF Women Charlottesville Qual | 2018/04/24 14:00 | Osaka, Mari v Mueller, Alexandra | 6-4,6-2 |
| ITF Women Charlottesville Qual | 2018/04/23 14:00 | Mueller, Alexandra v Marine Partaud | 4-6,6-4,7-5 |
| ITF Women Charlottesville Qual | 2018/04/22 15:55 | Mueller, Alexandra v Leduc, Catherine | 7-6,6-2 |
| ITF Women Indian Harbour Qual | 2018/04/09 16:40 | Peyton Stearns v Mueller, Alexandra | 5-7,6-3,6-4 |
| ITF Women Ashland Qual | 2018/07/22 19:25 | Catherine Harrison v Schaefer, Dominique | 6-2,6-2 |
| ITF Women Berkeley Qual | 2018/07/16 19:00 | Montez, Pamela v Catherine Harrison | 6-7,6-3,7-5 |
| ITF Women Berkeley Qual | 2018/07/15 19:00 | Catherine Harrison v Ryngler, Alexa | 4-6,6-4,6-3 |
| ITF Women Honolulu | 2018/07/12 23:15 | Lao, Danielle v Catherine Harrison | 6-3,2-6,6-1 |
| ITF Women Honolulu | 2018/07/11 20:00 | Moore, Tara v Catherine Harrison | 3-6,7-5,3-6 |
| ITF Women Honolulu Qual | 2018/07/10 20:00 | Gabueva, Angelina v Catherine Harrison | 5-7,1-6 |
| ITF Women Honolulu Qual | 2018/07/09 20:00 | Catherine Harrison v Ena Shibahara | 6-3,4-6,6-2 |
| ITF Women Honolulu Qual | 2018/07/08 22:10 | Catherine Harrison v Amy Zhu | 6-0,6-3 |