| Akita Masters 2019, MD | 2019/08/14 01:20 | Koga/Saito v Lam J / Wong H S | W | 2-0 |
| US Open 2019, MD | 2019/07/11 20:40 | Ko S H / Shin B C v Koga/Saito | L | 2-1 |
| US Open 2019, MD | 2019/07/10 20:30 | Arends J / Jille R v Koga/Saito | W | 1-2 |
| Canada Open MD | 2019/07/05 03:00 | Ko S H / Shin B C v Koga/Saito | L | 2-0 |
| Canada Open MD | 2019/07/03 15:40 | Koga/Saito v Leung S W H / Wheller M | W | 2-1 |
| Australian Open MD | 2019/06/06 05:15 | Koga/Saito v Liao M C / Su C H | L | 0-2 |
| Australian Open MD | 2019/06/05 05:10 | Okamura H / Onodera M v Koga/Saito | W | 1-2 |
| Australian Open MD Qual | 2019/06/04 00:00 | Chang T C / Yeung M N v Koga/Saito | W | 1-2 |
| Finnish Open MD | 2019/04/06 09:00 | Mitsuhashi K / Ogura Y v Jansen J R / Kaesbauer P | L | 0-2 |
| Giraldilla Int. XD | 2019/02/22 11:00 | Guo / Liu v Mitsuhashi K / Ogura Y | L | 2-0 |
| Giraldilla Int. XD | 2018/02/23 19:05 | Mitsuhashi K / Ogura Y v Leydon-Davis O / Moelhede L | L | 1-2 |