| UTR Pro Tennis Series California Women | 2020/07/23 17:15 | Guillermo, Lorraine M v Charlotte Chavatipon | 1-6,0-6 |
| UTR Pro Tennis Series California Women | 2020/07/08 17:15 | Guillermo, Lorraine M v Charlotte Chavatipon | 6-3,6-3 |
| UTR Pro Tennis Series California Women | 2020/07/06 18:30 | Guillermo, Lorraine M v Charlotte Chavatipon | 6-7,6-2,10-2 |
| Las Vegas, Singles W-ITF-USA-08A | 2020/03/02 18:00 | Charlotte Chavatipon v Guillermo, Lorraine M | 0-6,6-3,10-4 |
| ITF W15 Norman | 2019/10/03 15:00 | Guillermo, Lorraine M v Charlotte Chavatipon | 6-3,6-7,6-4 |
| UTR Pro Tennis Series California Women | 2020/07/28 16:00 | Guillermo, Lorraine M v Hance, Kimmi | 7-5,3-6,10-6 |
| UTR Pro Tennis Series California Women | 2020/07/25 18:30 | Guillermo, Lorraine M v Closs, Mary | 6-2,6-4 |
| UTR Pro Tennis Series California Women | 2020/07/25 16:00 | Guillermo, Lorraine M v Montez, Pamela | 4-6,3-6 |
| UTR Pro Tennis Series California Women | 2020/07/23 18:30 | Marcela Zacarias v Guillermo, Lorraine M | 1-6,6-3,9-11 |
| UTR Pro Tennis Series California Women | 2020/07/23 17:15 | Guillermo, Lorraine M v Charlotte Chavatipon | 1-6,0-6 |
| 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 | 2020/07/20 16:00 | Elvina Kalieva v Guillermo, Lorraine M | 2-6,6-1,10-5 |
| UTR Pro Tennis Series California Women | 2020/07/18 18:30 | Guillermo, Lorraine M v Mohamad, Shatoo | 7-6,2-6,8-10 |
| UTR Pro Tennis Series California Women | 2020/07/28 17:15 | Charlotte Chavatipon v Giuliana Olmos | 7-5,7-5 |
| UTR Pro Tennis Series California Women | 2020/07/26 18:30 | Montez, Pamela v Charlotte Chavatipon | 2-6,6-4,10-8 |
| UTR Pro Tennis Series California Women | 2020/07/26 17:15 | Morgina, Anna v Charlotte Chavatipon | 1-6,2-6 |
| UTR Pro Tennis Series California Women | 2020/07/23 19:45 | Giuliana Olmos v Charlotte Chavatipon | 6-3,6-2 |
| UTR Pro Tennis Series California Women | 2020/07/23 17:15 | Guillermo, Lorraine M v Charlotte Chavatipon | 1-6,0-6 |
| UTR Pro Tennis Series California Women | 2020/07/20 19:45 | Elvina Kalieva v Charlotte Chavatipon | 3-6,6-1,10-4 |
| UTR Pro Tennis Series California Women | 2020/07/20 17:15 | Hanna Chang v Charlotte Chavatipon | 6-4,6-2 |
| UTR Pro Tennis Series California Women | 2020/07/11 19:45 | Sophie Chang v Charlotte Chavatipon | 7-6,6-3 |