| Giraldilla Int. XD | 2018/07/25 02:55 | Saito/Watanabe v Hsieh/Tseng | L | 0-2 |
| Canada Open XD | 2018/06/20 15:10 | Saito/Watanabe v Kaesbauer/Konon | L | 1-2 |
| Swiss Open WD Qual | 2018/06/19 20:58 | Saito/Watanabe v Kim/Kim | W | 2-0 |
| Swiss Open WD Qual | 2018/06/19 19:40 | Li/Zhang v Saito/Watanabe | W | 0-2 |