| République tchèque - Extraleague | 2018/10/30 12:45 | Adriana Diaz v Hyojoo Choi | W | 0-3 |
| Swedish Open (WTP) 2019, WS | 2018/10/29 14:10 | Hyojoo Choi v Li, Fen | L | 2-4 |
| Qatar Open XD | 2018/07/26 09:20 | Hyojoo Choi v Miu Hirano | L | 0-4 |
| Qatar Open XD | 2018/07/25 06:40 | Hyojoo Choi v Jieni Shao | W | 4-0 |
| Qatar Open 2019, MS | 2018/07/20 06:10 | Hyojoo Choi v Manyu Wang | L | 2-4 |
| Qatar Open 2019, MS | 2018/07/19 06:30 | Hitomi Sato v Hyojoo Choi | W | 1-4 |
| Qatar Open XD | 2018/07/18 05:45 | Hyojoo Choi v Barbora Balazova | W | 4-2 |
| République tchèque - Extraleague | 2018/05/24 10:30 | Miu Hirano v Hyojoo Choi | L | 4-0 |
| République tchèque - Extraleague | 2018/10/30 12:45 | Zhang, S.-X. v Hayeong Kim | W | 0-3 |
| Swedish Open (WTP) 2019, WS | 2018/10/29 11:40 | Hayeong Kim v Rui Zhang | L | 0-4 |
| Qatar Open XD | 2018/08/22 13:50 | Yidi Wang v Hayeong Kim | L | 4-0 |
| République tchèque - Extraleague | 2018/08/16 13:20 | Georgina Pota v Hayeong Kim | L | 4-3 |
| République tchèque - Extraleague | 2018/08/15 05:30 | Shcherbatykh, Valeria v Hayeong Kim | L | 3-2 |
| Qatar Open 2019, MS | 2018/06/08 05:20 | Ishikawa, Kasumi v Hayeong Kim | L | 4-1 |
| Qatar Open XD | 2018/05/18 03:30 | Hayeong Kim v Mak, Tze Wing | W | 3-0 |