Stadium: Court 4 Round: 62 Ground: Clay
| ITF Women Osprey Qual | 2018/05/20 17:00 | Govortsova, Olga v Pierson, Rachel May | 6-4,6-0 |
| ITF Women Pelham Qual | 2018/04/09 15:00 | Pierson, Rachel May v Leduc, Catherine | 6-3,4-6,7-6 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | Collens, Brittany v Pierson, Rachel May | 2-6,3-6 |
| ITF Women Rancho Santa Fe Qual | 2018/02/20 18:20 | Khazaniuk, Deniz v Pierson, Rachel May | 7-5,6-0 |
| ITF Women Rancho Santa Fe Qual | 2018/02/19 17:30 | Pierson, Rachel May v Xu, Shilin | 3-6,7-6,7-6 |
| ITF Women Rancho Santa Fe Qual | 2018/02/18 17:30 | Sophia Bursulaya v Pierson, Rachel May | 0-6,0-6 |
| Surprise, Singles Qualifying W-WITF-USA-05A | 2018/02/12 18:20 | Pierson, Rachel May v Marine Partaud | 6-7,3-6 |
| Surprise, Singles Qualifying W-WITF-USA-05A | 2018/02/11 17:00 | Pierson, Rachel May v Amy Zhu | 7-6,6-2 |
| ITF Women Osprey Qual | 2018/05/23 13:00 | Fusinato, Francesca v Wijesundera, Rushri | 6-3,7-5 |
| ITF Women Osprey Qual | 2018/05/22 18:45 | Fusinato, Francesca v Wijesundera, Rushri | 6-3,6-5 |
| ITF Women Osprey Qual | 2018/05/22 14:00 | Kissell, Joelle v Wijesundera, Rushri | 6-4,4-6,8-10 |
| ITF Women Osprey Qual | 2018/05/20 17:00 | Mayo, Alyssa v Wijesundera, Rushri | 0-6,0-6 |
| ITF Women Tacarigua | 2018/05/07 14:00 | Maria Jose Portillo Ramirez v Wijesundera, Rushri | 6-2,7-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/04/16 08:00 | Wijesundera, Rushri v Jovanovski Petrovic, Bojana | 4-6,1-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/04/09 08:00 | Mariam Bolkvadze v Wijesundera, Rushri | 6-2,6-1 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/04/08 13:00 | Kalva, Bhuvana v Wijesundera, Rushri | 6-3,2-6,4-6 |