Stadium: Court 2 Round: 25
| ITF Women Macon Qual | 2017/10/23 21:20 | Hanna Chang v Guillermo, Lorraine M | 1-6,4-6 |
| ITF Women Las Vegas | 2018/11/08 20:00 | Hanna Chang v Fanny Stollar | 3-6,4-6 |
| ITF Women Las Vegas | 2018/11/07 18:00 | Muhammad, Asia v Hanna Chang | 6-4,3-6,3-6 |
| ITF Women Las Vegas | 2018/11/06 18:00 | Elbaba, Julia v Hanna Chang | 1-6,3-6 |
| ITF Women Las Vegas | 2018/11/05 19:50 | Hanna Chang v Sophie Chang | 6-4,6-2 |
| ITF Women Las Vegas | 2018/11/04 20:05 | Kissell, Joelle v Hanna Chang | 2-6,4-6 |
| ITF Women Tyler | 2018/10/29 15:00 | Douglas, Ellie v Hanna Chang | 6-2,6-3 |
| ITF Women Tyler | 2018/10/28 17:00 | Hanna Chang v Elie, Jennifer | 6-3,7-5 |
| ITF Women Macon | 2018/10/23 14:00 | Hailey Baptiste v Hanna Chang | 6-1,7-6 |
| ITF Women Lawrence | 2018/11/03 16:00 | Guillermo, Lorraine M v Subhash, Natasha | 5-7,3-6 |
| ITF Women Toronto | 2018/10/28 14:00 | Shaffer, Kennedy v Guillermo, Lorraine M | 6-4,6-3 |
| ITF Women Toronto | 2018/10/27 16:35 | Tanasescu, Maria v Guillermo, Lorraine M | 1-6,1-6 |
| ITF Women Saguenay | 2018/10/21 16:45 | Montez, Pamela v Guillermo, Lorraine M | 6-1,6-3 |
| ITF Women Saguenay | 2018/10/20 16:10 | Garcia, Alice v Guillermo, Lorraine M | 4-6,3-6 |
| ITF Women Stockton | 2018/09/30 22:25 | Guillermo, Lorraine M v Beatrice Gumulya | 5-7,5-7 |
| Templeton, Singles W-WITF-USA-32A | 2018/09/23 21:40 | Guillermo, Lorraine M v Elie, Jennifer | 6-7,4-6 |
| ITF Women Fort Worth | 2018/08/02 14:00 | Guillermo, Lorraine M v Maria Mateas | 2-6,2-6 |