| Osaka Int. | 2019/04/04 06:40 | Weng, H. Y. v Koki Watanabe | W | 0-2 |
| Orléans Masters | 2019/03/24 14:00 | Koki Watanabe v Rouxel, Thomas | W | 2-1 |
| Orléans Masters | 2019/03/23 14:30 | Koki Watanabe v Li, S. F. | W | 2-0 |
| Orléans Masters | 2019/03/22 15:40 | Cupu, G. P. F. v Koki Watanabe | W | 0-2 |
| Orléans Masters | 2019/03/21 17:40 | Parupalli, Kashyap v Koki Watanabe | W | 0-2 |
| Orléans Masters | 2019/03/20 10:30 | Krausz, Gergely v Koki Watanabe | W | 1-2 |
| Orléans Masters | 2019/03/19 18:10 | Adrian Dziolko v Koki Watanabe | W | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/03/12 14:20 | Koki Watanabe v Kalle Koljonen | L | 0-2 |
| Osaka Int. | 2019/04/04 06:40 | Takuma Kawamoto v Ren, P. B. | W | 0-2 |
| Osaka Int. | 2019/04/04 01:20 | Ren, P. B. v Koga, Minoru | W | 2-0 |
| Open de Pologne - Qualif. | 2019/03/28 09:30 | Ren, P. B. v Schaenzler, Lars | - | home |
| Orléans Masters | 2019/03/20 14:10 | Ren, P. B. v Li, S. F. | L | 1-2 |
| Masters d'Espagne | 2019/02/22 16:00 | Ren, P. B. v Pablo Abian | W | 2-1 |
| Masters d'Espagne | 2019/02/21 12:20 | Verma, Sourabh v Ren, P. B. | W | 0-2 |
| Masters d'Espagne | 2019/02/20 14:40 | Ren, P. B. v Ygor Coelho | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/08 02:00 | Ren, P. B. v Thongnuam, Pannawit | L | 0-2 |