Stadium: C Round: 62
| ITF Women SJD Campos | 2018/03/15 17:30 | Okuda, Akiko v Petit, Stephanie Mariel | 1-6,2-6 |
| ITF Women SJD Campos | 2018/03/14 15:30 | Rebeca Pereira v Okuda, Akiko | 1-6,6-7 |
| ITF Women SJD Campos Qual | 2018/03/10 16:00 | Okuda, Akiko v Bosch, Maria Virginia | 6-2,6-0 |
| ITF Women Campinas Qual | 2018/03/05 13:00 | Lucero, Carla v Okuda, Akiko | 6-2,6-2 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Hudson, Althea v Okuda, Akiko | 0-6,0-6 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/24 12:00 | Okuda, Akiko v Giangreco Campiz, Camila | 2-6,6-3,4-6 |
| ITF Women Curitiba Qual | 2018/02/17 14:30 | Okuda, Akiko v Madison Bourguignon | 2-6,1-6 |
| ITF Women Petit-Bourg | 2018/01/15 16:10 | Okuda, Akiko v Kokeladze, Kamilla | 5-7,6-7 |
| ITF Women Tel Aviv | 2018/03/22 11:30 | Kobelt, Madeleine v Marker, Lauren | 6-2,1-6,6-3 |
| ITF Women Tel Aviv | 2018/03/20 08:00 | Marker, Lauren v Hsu, Ching Wen | 6-1,6-3 |
| ITF Women Ramat Hasharon | 2018/03/13 08:00 | Scholsen, Helene v Marker, Lauren | 6-3,6-3 |
| Indian Wells, USA, Qualifying | 2018/02/24 18:00 | Broady, Naomi v Marker, Lauren | 6-3,6-3 |
| ITF Women Rancho Santa Fe Qual | 2018/02/19 17:30 | Marker, Lauren v Neel, Ingrid | 3-6,3-6 |
| ITF Women Rancho Santa Fe Qual | 2018/02/18 17:30 | Jovic, J. v Marker, Lauren | 6-7,2-6 |
| ITF Women Surprise | 2018/02/14 17:00 | Marker, Lauren v Ana Sofia Sanchez | 7-6,3-6,2-6 |
| ITF Women Petit-Bourg | 2018/01/17 18:25 | Caty McNally v Marker, Lauren | 6-2,6-0 |