Face à face
| German Open 2020, MS | 2019/10/11 16:40 | Jeoung, Youngsik v Koki Niwa | W | 4-3 |
| Qatar Open XD | 2018/02/24 17:40 | Koki Niwa v Jeoung, Youngsik | W | 1-3 |
Home History
| Olympics 2020 - Team Men | 2021/08/02 06:30 | Gustavo Tsuboi v Jeoung, Youngsik | W | 2-3 |
| Olympics 2020 - Team Men | 2021/08/01 02:00 | Tokic, Bojan v Jeoung, Youngsik | L | 3-1 |
| Olympics 2020 - Men | 2021/07/28 02:00 | Zhendong Fan v Jeoung, Youngsik | L | 4-0 |
| Olympics 2020 - Men | 2021/07/27 07:30 | Jeoung, Youngsik v Timo Boll | W | 4-1 |
| Olympics 2020 - Men | 2021/07/27 01:00 | Jeoung, Youngsik v Panagiotis Gionis | W | 4-3 |
| WTT Star Contender Doha | 2021/03/11 11:00 | Tomokazu Harimoto v Jeoung, Youngsik | L | 3-0 |
| WTT Star Contender Doha | 2021/03/10 07:15 | Gustavo Tsuboi v Jeoung, Youngsik | W | 1-3 |
| WTT Star Contender Doha | 2021/03/09 08:35 | Kirill Gerassimenko v Jeoung, Youngsik | W | 2-3 |
Away History
| Olympics 2020 - Team Men | 2021/08/04 13:30 | Koki Niwa v Dimitrij Ovtcharov | L | 0-3 |
| Olympics 2020 - Team Men | 2021/08/03 02:30 | Koki Niwa v Mattias Falck | W | 3-0 |
| Olympics 2020 - Men | 2021/07/27 12:30 | Koki Niwa v Dimitrij Ovtcharov | L | 1-4 |
| Olympics 2020 - Men | 2021/07/27 06:30 | Koki Niwa v Yang Wang | W | 4-0 |
| WTT Star Contender Doha | 2021/03/09 12:35 | Koki Niwa v Gustavo Tsuboi | L | 0-3 |
| Japon - T League | 2020/12/24 10:30 | Koki Niwa v Yoshimura, Kazuhiro | L | 0-3 |
| Japon - T League | 2020/12/23 11:35 | Mizutani, Jun v Koki Niwa | L | 3-2 |
| Japon - T League | 2020/12/22 06:30 | Panagiotis Gionis v Koki Niwa | W | 2-3 |