| Giraldilla Int. XD | 2018/11/30 06:50 | Joo Ven Soong v Thammasin, S. | L | 1-2 |
| Giraldilla Int. XD | 2018/11/29 06:35 | Joo Ven Soong v Phetpradab, Khosit | W | 2-0 |
| Giraldilla Int. XD | 2018/11/28 09:10 | Joo Ven Soong v Ha, Young Woong | W | 2-1 |
| Dutch Open | 2018/10/12 16:30 | Mark Caljouw v Joo Ven Soong | L | 2-0 |
| Dutch Open | 2018/10/11 14:50 | Pablo Abian v Joo Ven Soong | W | 1-2 |
| Dutch Open | 2018/10/10 13:20 | Luka Wraber v Joo Ven Soong | W | 0-2 |
| Dutch Open | 2018/10/09 17:35 | Pochtarov, Artem v Joo Ven Soong | W | 1-2 |
| Giraldilla Int. XD | 2018/09/09 13:04 | Sameer Verma v Joo Ven Soong | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/08 06:00 | Koki Watanabe v Elias Bracke | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/08 02:40 | Koki Watanabe v Leelavechabutr, Kantawat | W | 2-1 |
| Giraldilla Int. XD | 2018/12/22 20:00 | Koki Watanabe v Kodai Naraoka | W | 2-1 |
| Giraldilla Int. XD | 2018/12/22 02:00 | Hsu, Jen Hao v Koki Watanabe | W | 1-2 |
| Giraldilla Int. XD | 2018/12/21 02:05 | Koki Watanabe v Kevin Cordon | W | 2-0 |
| Giraldilla Int. XD | 2018/12/19 20:30 | Misha Zilberman v Koki Watanabe | W | 0-2 |
| Giraldilla Int. XD | 2018/12/18 22:30 | Koki Watanabe v Durkinjak, Zvonimir | D | 0-0 |
| Macau Open 2019, MS | 2018/10/31 12:20 | Koki Watanabe v Wong, Wing Ki Vincent | L | 0-2 |