Stadium: Court 11 Round: 62
| ITF Women Victoria | 2018/06/18 20:00 | Vivian Mayumi Toma v Brynn Boren | 0-6,1-6 |
| ITF Women Osprey Qual | 2018/05/22 14:00 | Hailey Baptiste v Vivian Mayumi Toma | 6-0,6-0 |
| ITF Women Osprey Qual | 2018/05/21 14:00 | Vivian Mayumi Toma v Charity Johns | 7-5,6-4 |
| ITF Women Tacarigua | 2018/05/08 14:00 | Akilah James v Vivian Mayumi Toma | 6-3,6-0 |
| ITF Women Khimki Qual | 2018/04/28 14:25 | Vivian Mayumi Toma v Ksenia Palkina | 1-6,1-6 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | Vivian Mayumi Toma v Catherine Leduc | 0-6,0-6 |
| ITF Women Jackson Qual | 2018/04/01 18:00 | Iga Świątek v Vivian Mayumi Toma | 6-0,6-0 |
| ITF Women Tel Aviv | 2018/03/19 08:00 | Keren Mor v Vivian Mayumi Toma | 6-2,6-2 |
| ITF Women Evansville | 2018/07/22 14:00 | Mayuka Aikawa v Tara Malik | 6-2,6-4 |
| ITF Women Antalya | 2018/06/05 09:40 | Mayuka Aikawa v Francesca Bullani | 3-6,2-6 |
| ITF Women Antalya | 2018/05/29 07:30 | Kamilla Kokeladze v Mayuka Aikawa | 6-2,7-6 |
| ITF Women Antalya Qual | 2018/05/28 11:30 | Mayuka Aikawa v Emily Casteleyn | 6-4,6-1 |
| ITF Women Incheon Qual | 2018/05/15 01:00 | Mayuka Aikawa v Alicia Barnett | 4-6,4-6 |
| ITF Women Incheon Qual | 2018/05/14 02:00 | Mayuka Aikawa v Sol Hee Sim | 6-1,6-1 |
| ITF Women Incheon Qual | 2018/05/13 01:00 | Dami Lee v Mayuka Aikawa | 0-6,0-6 |
| ITF Women Osaka Qual | 2018/04/08 02:00 | Mayuka Aikawa v Risa Ushijima | 4-6,1-6 |