Head to Head
| Vietnam Open | 2019/09/12 09:20 | Koki Watanabe v Feixiang Sun | L | 0-2 |
| Australian Open Qual | 2019/06/04 00:10 | Feixiang Sun v Koki Watanabe | L | 2-1 |
| New Zealand Open Qual | 2019/04/29 22:35 | Koki Watanabe v Feixiang Sun | L | 0-2 |
Home History
| Vietnam Open | 2019/09/12 09:20 | Koki Watanabe v Feixiang Sun | L | 0-2 |
| Vietnam Open | 2019/09/12 02:00 | Kwang Hee Heo v Koki Watanabe | W | 1-2 |
| Vietnam Open | 2019/09/11 02:30 | Koki Watanabe v Miha Ivanic | W | 2-0 |
| Chinese Taipei Open | 2019/09/07 05:00 | Kwang Hee Heo v Koki Watanabe | L | 2-1 |
| Chinese Taipei Open | 2019/09/06 09:00 | Chia Hung Lu v Koki Watanabe | W | 0-2 |
| Chinese Taipei Open | 2019/09/05 09:15 | Koki Watanabe v Kean Yew Loh | W | 2-1 |
| Chinese Taipei Open | 2019/09/04 12:30 | Chih Chieh Yang v Koki Watanabe | W | 0-2 |
| Akita Masters | 2019/08/16 02:15 | Yu Igarashi v Koki Watanabe | L | 2-1 |
Away History
| Macau Open | 2019/10/31 07:45 | Feixiang Sun v Wan Ho Son | W | 2-0 |
| Macau Open | 2019/10/30 09:10 | Feixiang Sun v Ajay Jayaram | W | 2-0 |
| Indonesia Masters | 2019/10/06 05:30 | Feixiang Sun v Tanongsak Saensomboonsuk | W | 2-0 |
| Indonesia Masters | 2019/10/05 08:30 | Feixiang Sun v Joo Ven Soong | W | 2-0 |
| Indonesia Masters | 2019/10/04 08:30 | Jia Wei Tan v Feixiang Sun | W | 0-2 |
| Indonesia Masters | 2019/10/03 08:45 | Feixiang Sun v Haichao Liu | W | 2-1 |
| Indonesia Masters | 2019/10/02 09:10 | Feixiang Sun v Yupeng Bai | W | 2-0 |
| Vietnam Open | 2019/09/15 06:40 | Feixiang Sun v Sourabh Verma | L | 1-2 |