Stadium: Court 13 Round: 26 Ground: Clay
| ITF Women Hilton Head | 2018/09/26 13:00 | 후, 빅토리아 v Marsh, Ruth | 4-6,3-6 |
| ITF Women Hilton Head | 2018/09/24 14:30 | Marsh, Ruth v Bakaite, Paulina | 6-2,6-3 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | 발레로, 줄리아나 v Marsh, Ruth | 0-6,6-4,6-2 |
| Tampa, Singles Qualifying W-WITF-USA-08A | 2018/03/11 14:00 | Mulville, Victoria v Marsh, Ruth | 6-3,2-6,6-2 |
| ITF Women Orlando Qual | 2018/03/04 15:30 | 크라시운, 안카 v Marsh, Ruth | 6-3,7-5 |
| ITF Women Hilton Head | 2018/09/25 16:30 | 자마리파, 알루라 v 데비드즈, 살롬 | 6-3,6-1 |