| Indonesia International Challenge 2019, WS | 2019/10/25 09:20 | Asuka Takahashi v Jeon, Joo I | L | 2-0 |
| Indonesia International Challenge 2019, WS | 2019/10/24 08:20 | Fatmawati, Sri Fatmawati v Jeon, Joo I | W | 0-2 |
| Indonesia International Challenge 2019, WS | 2019/10/23 09:20 | Albo, Airah Mae Nicole v Jeon, Joo I | W | 0-2 |
| Korea Open 2019, WS | 2019/09/25 02:50 | Jeon, Joo I v Aya Ohori | L | 0-2 |
| Korea Open 2019, WS, Qualification | 2019/09/24 03:00 | Yip, Pui Yin v Jeon, Joo I | W | 0-2 |
| New Zealand Open 2019, WS | 2019/04/30 23:00 | Li, Y. v Jeon, Joo I | L | 2-1 |
| China Masters Women | 2019/03/15 12:30 | Jeon, Joo I v Kim, Hyo Min | L | 0-2 |
| China Masters Women | 2019/03/14 07:40 | Chua, Hui Zhen Grace v Jeon, Joo I | W | 0-2 |
| Vietnam Open Women | 2019/09/12 05:20 | Mine, Ayumi v Ji, S. | L | 0-2 |
| Vietnam Open Women | 2019/09/11 02:20 | Mine, Ayumi v Jucharoen, Chananchida | W | 2-0 |
| Chinese Taipei Open 2019, WS | 2019/09/05 04:00 | Sung, Ji Hyun v Mine, Ayumi | L | 2-1 |
| Chinese Taipei Open 2019, WS | 2019/09/04 02:40 | Mine, Ayumi v Yulia Y Susanto | W | 2-0 |
| Akita Masters 2019, WS | 2019/08/14 07:20 | Shimoda, Natsumi v Mine, Ayumi | L | 2-1 |
| US Open 2019, WS | 2019/07/13 21:10 | Mine, Ayumi v Wang, Z. Y. | L | 0-2 |
| US Open 2019, WS | 2019/07/13 00:50 | Mine, Ayumi v Sim, Yu Jin | W | 2-1 |
| US Open 2019, WS | 2019/07/11 22:00 | Su Yu Chen v Mine, Ayumi | W | 0-2 |