| Dutch Int. - Doubles Hommes | 04/16 10:40 | - | Easton/Russ v Ichikawa K / Umayahara D | W | 1-2 | |
| Dutch Int. - Doubles Hommes | 04/15 13:40 | - | Koppen/Vlaar v Ichikawa K / Umayahara D | W | 0-2 | |
| Dutch Int. - Doubles Hommes | 04/15 08:50 | - | Aizawa/Noda v Ichikawa K / Umayahara D | W | 1-2 | |
| Dutch Int. - Doubles Hommes | 04/14 19:45 | - | Ichikawa K / Umayahara D v Lin/Su | W | 2-0 | |
| Dutch Int. - Doubles Hommes | 04/14 14:25 | - | Slepecki/Smilowski v Ichikawa K / Umayahara D | W | 0-2 | |
| International du Portugal Doubles Hommes | 03/12 15:20 | - | Ichikawa K / Umayahara D v Maio/Villeger | L | 1-2 | |
| International du Portugal Doubles Hommes | 03/12 10:30 | - | Ichikawa K / Umayahara D v Aizawa/Noda | W | 2-1 | |
| International du Portugal Doubles Hommes | 03/11 17:10 | - | Easton/Russ v Ichikawa K / Umayahara D | W | 0-2 | |
| International du Portugal Doubles Hommes | 03/11 12:20 | - | Ichikawa K / Umayahara D v MacGregor/Pringle | W | 2-0 | |
| International du Portugal Doubles Hommes | 03/10 18:40 | - | Ichikawa K / Umayahara D v Alava/Sanjurjo | W | 2-0 | |
| Austrian Open MD | 02/21 12:00 | 4 | Ichikawa K / Umayahara D v Dunn/Hall | L | 0-2 | |
| Austrian Open MD | 02/20 18:10 | 5 | Ichikawa K / Umayahara D v Bay J / Mikkelsen M | W | 2-1 | |
| Akita Masters 2019, MD | 08/14 00:10 | 5 | Liu/Huang v Ichikawa K / Umayahara D | L | 2-0 | |
| Giraldilla Int. XD | 07/25 07:30 | 5 | Ichikawa K / Umayahara D v Lin/Su | L | 0-2 |