| UTR Pro Tennis Series California Women | 2020/07/29 17:15 | Hanna Chang v Guillermo, Lorraine M | 3-6,6-2,10-6 |
| UTR Pro Tennis Series California Women | 2020/07/20 18:30 | Guillermo, Lorraine M v Hanna Chang | 1-6,2-6 |
| UTR Pro Tennis Series California Women | 2020/07/13 19:45 | Guillermo, Lorraine M v Hanna Chang | 2-6,1-6 |
| US Pro Tennis Series West Coast Women | 2020/06/19 17:20 | Hanna Chang v Guillermo, Lorraine M | 6-4,7-5 |
| US Pro Tennis Series West Coast Women | 2020/06/05 18:05 | Hanna Chang v Guillermo, Lorraine M | 6-0,6-4 |
| Surprise, Singles W-ITF-USA-04A | 2019/02/11 16:00 | Guillermo, Lorraine M v Hanna Chang | 6-3,2-6,4-10 |
| ITF Women Norman | 2018/11/13 20:25 | Hanna Chang v Guillermo, Lorraine M | 4-6,4-6 |
| ITF Women Macon Qual | 2017/10/23 21:20 | Hanna Chang v Guillermo, Lorraine M | 1-6,4-6 |