| Sumter, Singles Qualifying W-WITF-USA-18A | 2018/06/11 13:00 | Pierre-Louis, Kariann v Whittle, Sophia | 4-6,0-6 |
| Sumter, Singles Qualifying W-WITF-USA-18A | 2018/06/10 13:00 | Pierre-Louis, Kariann v Huynh, T. P. D. | 6-0,6-4 |
| ITF Women Osprey | 2018/05/24 17:10 | Allie Kiick v Pierre-Louis, Kariann | 6-1,6-0 |
| ITF Women Osprey | 2018/05/24 13:00 | Alycia Parks v Pierre-Louis, Kariann | 4-6,6-1,4-10 |
| ITF Women Osprey Qual | 2018/05/23 17:05 | Layne Sleeth v Pierre-Louis, Kariann | 4-6,3-6 |
| ITF Women Osprey Qual | 2018/05/21 14:00 | Sysoeva, Anastasia v Pierre-Louis, Kariann | 3-6,6-4,1-6 |
| ITF Women Tacarigua | 2018/05/09 14:00 | Pierre-Louis, Kariann v Brodsky, Gail | 6-4,1-6,4-6 |
| ITF Women Tacarigua | 2018/05/07 18:00 | Pierre-Louis, Kariann v Prince, Shelby | 6-1,6-0 |