Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/07/09 04:55 | Bunyawi Thamchaiwat v Ji-Hee Choi | 6-0,6-2 |
| ITF Women Daegu | 2018/06/19 06:35 | Su Jeong Jang v Ji-Hee Choi | 7-5,3-6,7-6 |
| ITF Women Singapore | 2018/06/14 03:00 | Ji-Hee Choi v Risa Ozaki | 1-6,1-6 |
| ITF Women Singapore | 2018/06/13 02:00 | Mai Minokoshi v Ji-Hee Choi | 2-6,3-6 |
| ITF Women Singapore | 2018/06/12 02:00 | Ji-Hee Choi v Deria Nur Haliza | 3-6,6-1,6-3 |
| ITF Women Singapore Qual | 2018/06/10 04:10 | Ji-Hee Choi v Riya Bhatia | 6-4,7-5 |
| ITF Women Singapore Qual | 2018/06/09 03:30 | Ji-Hee Choi v Ksenia Kuznetsova | 6-4,7-6 |
| ITF Women Singapore | 2018/06/04 06:20 | Ji-Hee Choi v Miyabi Inoue | 2-6,4-6 |
| US Open Women | 2018/08/28 20:05 | Monica Puig v Stefanie Voegele | 6-0,6-0 |
| WTA New Haven | 2018/08/17 19:25 | Stefanie Voegele v Valeria Savinykh | 6-3,7-5 |
| WTA New Haven Qual | 2018/08/17 17:15 | Stefanie Voegele v Valeria Savinykh | 6-3,6-5 |
| WTA Cincinnati | 2018/08/13 16:30 | Svetlana Kuznetsova v Stefanie Voegele | 6-4,2-6,7-6 |
| WTA Cincinnati Qual | 2018/08/12 16:00 | Jamie Loeb v Stefanie Voegele | 4-6,1-6 |
| WTA Cincinnati Qual | 2018/08/11 21:05 | Stefanie Voegele v Monica Puig | 6-2,6-0 |
| WTA Montreal Qual | 2018/08/04 18:30 | Christina McHale v Stefanie Voegele | 7-6,7-6 |
| WTA Gstaad | 2018/07/18 15:30 | Stefanie Voegele v Tamara Korpatsch | 2-6,0-6 |