| Denmark Open XD | 10/24 11:00 | 1 | Watanabe/Higashino v Puavaranukroh/Taerattanachai | W | 2-0 | |
| Denmark Open XD | 10/23 08:00 | 2 | Wang/Huang v Watanabe/Higashino | W | 1-2 | |
| Denmark Open XD | 10/22 11:00 | - | Watanabe/Higashino v Tan/Lai | W | 2-1 | |
| Denmark Open XD | 10/21 10:40 | - | Watanabe/Higashino v Rivaldy/Mentari | W | 2-0 | |
| Denmark Open XD | 10/19 14:25 | 5 | Watanabe/Higashino v Maulana/Bandaso | W | 2-0 | |
| Sudirman Cup XD | 10/03 12:00 | - | Wang/Huang v Watanabe/Higashino | - | Cancelled | |
| Sudirman Cup XD | 10/02 15:00 | - | Hoo/Cheah v Watanabe/Higashino | - | Cancelled | |
| Sudirman Cup XD | 10/01 15:00 | - | Lu/Chang v Watanabe/Higashino | - | Cancelled | |
| Sudirman Cup XD | 09/30 15:00 | - | Watanabe/Higashino v Hoo/Cheah | W | 2-0 | |
| Sudirman Cup XD | 09/28 13:00 | - | Watanabe/Higashino v Ellis/Smith | W | 2-0 | |
| Olympics 2020 - XD | 07/30 01:30 | 50 | Tang/Tse v Watanabe/Higashino | W | 0-2 | |
| Olympics 2020 - XD | 07/29 00:00 | 2 | Watanabe/Higashino v Wang/Huang | L | 1-2 | |
| Olympics 2020 - XD | 07/28 02:40 | 3 | Watanabe/Higashino v Puavaranukroh/Taerattanachai | W | 2-1 | |
| Olympics 2020 - XD | 07/26 01:40 | 1 | Jordan/Oktavianti v Watanabe/Higashino | W | 0-2 | |
| Olympics 2020 - XD | 07/25 09:40 | 1 | Watanabe/Higashino v Leung/Somerville | W | 2-0 | |
| Olympics 2020 - XD | 07/24 00:00 | 1 | Watanabe/Higashino v Christiansen/Boje | W | 2-1 | |
| All England Open XD | 03/21 11:20 | 1 | Kaneko/Matsutomo v Watanabe/Higashino | W | 0-2 | |
| All England Open XD | 03/20 12:40 | 2 | Ellis/Smith v Watanabe/Higashino | W | 0-2 | |
| All England Open XD | 03/19 14:20 | 3 | Tan/Lai v Watanabe/Higashino | W | 0-2 | |
| All England Open XD | 03/18 13:00 | 4 | Christiansen/Bøje v Watanabe/Higashino | W | 0-2 | |
| All England Open XD | 03/17 17:40 | 5 | Labar/Tran v Watanabe/Higashino | W | 0-2 | |
| Denmark Open XD | 10/13 08:00 | 5 | Watanabe/Higashino v Magee/Magee | - | Walkover | |
| All England Open XD | 03/12 11:30 | 4 | Ellis/Smith v Watanabe/Higashino | L | 2-0 | |
| All England Open XD | 03/11 09:20 | 5 | Hyun Ko/Eom v Watanabe/Higashino | W | 0-2 | |
| World Tour Finals XD | 12/14 03:00 | 2 | Zheng/Huang v Watanabe/Higashino | L | 2-1 | |
| World Tour Finals XD | 12/13 03:40 | 3 | Watanabe/Higashino v Faizal/Emanuelle Widjaja | W | 2-0 | |
| World Tour Finals XD | 12/12 04:00 | 2 | Jordan/Oktavianti v Watanabe/Higashino | W | 1-2 | |
| World Tour Finals XD | 12/11 11:30 | 1 | Zheng/Huang v Watanabe/Higashino | W | 0-2 | |
| Hong Kong Open XD | 11/17 07:20 | 1 | Watanabe/Higashino v He/Du | W | 2-0 | |
| Hong Kong Open XD | 11/16 11:50 | 2 | Faizal/Emanuelle Widjaja v Watanabe/Higashino | W | 0-2 |