| UTR Pro Tennis Series California Women | 2020/07/28 18:30 | Guillermo, Lorraine M v Chavatipon, Charlotte | 3-6,4-6 |
| UTR Pro Tennis Series California Women | 2020/07/23 17:15 | Guillermo, Lorraine M v Chavatipon, Charlotte | 1-6,0-6 |
| UTR Pro Tennis Series California Women | 2020/07/08 17:15 | Guillermo, Lorraine M v Chavatipon, Charlotte | 6-3,6-3 |
| UTR Pro Tennis Series California Women | 2020/07/06 18:30 | Guillermo, Lorraine M v Chavatipon, Charlotte | 6-7,6-2,10-2 |
| Las Vegas, Singles W-ITF-USA-08A | 2020/03/02 18:00 | Chavatipon, Charlotte v Guillermo, Lorraine M | 0-6,6-3,10-4 |
| ITF W15 Norman | 2019/10/03 15:00 | Guillermo, Lorraine M v Chavatipon, Charlotte | 6-3,6-7,6-4 |
| UTR Pro Tennis Series California Women | 2020/08/01 16:00 | Guillermo, Lorraine M v Giuliana Olmos | 3-6,3-6 |
| UTR Pro Tennis Series California Women | 2020/07/29 18:30 | Guillermo, Lorraine M v Sherif, Jwany | 6-4,6-7,6-10 |
| 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 | 2020/07/28 18:30 | Guillermo, Lorraine M v Chavatipon, Charlotte | 3-6,4-6 |
| 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 | 2020/08/01 17:15 | Marcela Zacarias v Chavatipon, Charlotte | 6-4,6-1 |
| UTR Pro Tennis Series California Women | 2020/07/31 21:15 | Chavatipon, Charlotte v Marcela Zacarias | 6-4,3-6,6-10 |
| UTR Pro Tennis Series California Women | 2020/07/28 18:30 | Guillermo, Lorraine M v Chavatipon, Charlotte | 3-6,4-6 |
| UTR Pro Tennis Series California Women | 2020/07/28 17:15 | Chavatipon, Charlotte v Giuliana Olmos | 7-5,7-5 |
| UTR Pro Tennis Series California Women | 2020/07/26 18:30 | Montez, Pamela v Chavatipon, Charlotte | 2-6,6-4,10-8 |
| UTR Pro Tennis Series California Women | 2020/07/26 17:15 | Morgina, Anna v Chavatipon, Charlotte | 1-6,2-6 |
| UTR Pro Tennis Series California Women | 2020/07/23 19:45 | Giuliana Olmos v Chavatipon, Charlotte | 6-3,6-2 |
| UTR Pro Tennis Series California Women | 2020/07/23 17:15 | Guillermo, Lorraine M v Chavatipon, Charlotte | 1-6,0-6 |