| Giraldilla Int. - Mixed dubbel | 2018/06/15 02:00 | Aya Ohori v Joo I Jeon | L | 2-1 |
| Korea Open - Damer - Kval | 2019/09/24 03:00 | Pui Yin Yip v Joo I Jeon | W | 0-2 |
| New Zealand Open Women | 2019/04/30 23:00 | Yun Li v Joo I Jeon | L | 2-1 |
| China Masters Women | 2019/03/15 12:30 | Joo I Jeon v Hyo Min Kim | L | 0-2 |
| China Masters Women | 2019/03/14 07:40 | Hui Zhen Grace Chua v Joo I Jeon | W | 0-2 |
| China Masters Women | 2019/03/13 09:20 | Yu Ying Hsieh v Joo I Jeon | W | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/11/28 09:00 | Joo I Jeon v Nitchaon Jindapol | L | 1-2 |
| Macau Open - Damer | 2018/10/31 08:30 | Joo I Jeon v Ngan Yi Cheung | L | 0-2 |
| Swiss Open - Damdubbel - Kval | 2018/09/25 03:45 | Porntip Buranaprasertsuk v Joo I Jeon | L | 2-1 |
| China Open - Damer | 2019/09/19 07:55 | Aya Ohori v Tzu Ying Tai | L | 0-2 |
| China Open - Damer | 2019/09/18 05:45 | Ngan Yi Cheung v Aya Ohori | W | 0-2 |
| VM - Damer | 2019/08/20 08:00 | Bingjiao He v Aya Ohori | L | 2-1 |
| VM - Damer | 2019/08/19 10:00 | Ngan Yi Cheung v Aya Ohori | W | 0-2 |
| Thailand Open - Damer | 2019/07/31 12:40 | Pornpawee Chochuwong v Aya Ohori | L | 2-0 |
| Japan Open - Damer | 2019/07/25 05:05 | Aya Ohori v Pusarla V. Sindhu | L | 1-2 |
| Japan Open - Damer | 2019/07/24 07:50 | Kirsty Gilmour v Aya Ohori | W | 0-2 |
| Indonesia Open - Damer | 2019/07/17 03:00 | Aya Ohori v Pusarla V. Sindhu | L | 1-2 |