| World Championships MD | 08/21 13:55 | 6 | Farias/Farias v Koga/Saito | W | 0-2 | |
| Australian Open MD | 08/04 06:00 | 3 | Lee/Wang v Koga/Saito | L | 2-0 | |
| Australian Open MD | 08/03 04:50 | 4 | Madaan/Madaan v Koga/Saito | W | 0-2 | |
| Australian Open MD | 08/01 06:00 | 5 | Gutama/Isfahani v Koga/Saito | W | 0-2 | |
| Japan Open MD | 07/28 01:00 | 3 | Liu/Ou v Koga/Saito | L | 2-1 | |
| Japan Open MD | 07/27 02:55 | 4 | Koga/Saito v Liang/Wang | W | 2-0 | |
| Japan Open MD | 07/26 02:00 | 5 | Su/Ye v Koga/Saito | W | 0-2 | |
| Korea Open MD | 07/18 07:35 | 5 | Saito/Koga v He/Zhou | L | 0-2 | |
| Canada Open MD | 07/08 18:00 | 2 | Koga/Saito v Kjaer/Sogaard | L | 1-2 | |
| Canada Open MD | 07/07 18:50 | 3 | Hoki/Kobayashi v Koga/Saito | W | 0-2 | |
| Canada Open MD | 07/06 18:55 | 4 | Koga/Saito v Corvee/Labar | W | 2-1 | |
| Canada Open MD | 07/05 00:20 | 5 | Koga/Saito v Flaatten/Rikheim | - | Walkover | |
| Indonesia Open MD | 06/16 13:10 | 3 | Koga/Saito v Chia/Soh | L | 0-2 | |
| Indonesia Open MD | 06/15 08:05 | 4 | Koga/Saito v Liu/Ou | W | 2-1 | |
| Indonesia Open MD | 06/14 05:25 | 5 | Koga/Saito v Lee/Wang | W | 2-1 | |
| Singapore Open MD | 06/09 11:00 | 3 | Koga/Saito v Hoki/Kobayashi | L | 1-2 | |
| Singapore Open MD | 06/08 06:45 | 4 | Ren/Tan v Koga/Saito | W | 0-2 | |
| Singapore Open MD | 06/07 06:25 | 5 | Saito/Koga v Rankireddy/Shetty | W | 2-1 | |
| Malaysia Masters MD | 05/25 09:10 | 4 | Kang/Seo v Koga/Saito | L | 2-0 | |
| Malaysia Masters MD | 05/23 08:05 | 5 | Su/Ye v Koga/Saito | W | 1-2 | |
| Sudirman Cup MD | 05/14 10:00 | - | Koga/Saito v Lane/Vendy | W | 2-0 | |
| Asia Championships MD | 04/26 10:25 | 5 | Ren/Tan v Koga/Saito | L | 2-0 | |
| Swiss Open MD | 03/24 13:05 | 3 | Koga/Saito v Ren/Tan | L | 0-2 | |
| Swiss Open MD | 03/23 12:20 | 4 | Chia/Soh v Koga/Saito | W | 1-2 | |
| Swiss Open MD | 03/21 20:05 | 5 | Saito/Koga v Arjun/Kapila | W | 2-1 | |
| All England Open MD | 03/15 16:50 | 5 | Bay/Mølhede v Koga/Saito | L | 2-1 | |
| German Open MD | 03/11 17:45 | 2 | Koga/Saito v Choi/Kim | L | 1-2 | |
| German Open MD | 03/10 17:55 | 3 | Koga/Saito v Bay/Moelhede | W | 2-0 | |
| German Open MD | 03/09 18:15 | 4 | Chia/Soh v Koga/Saito | W | 0-2 | |
| German Open MD | 03/08 09:00 | 5 | Man/Tee v Koga/Saito | - | Walkover |