| Giraldilla Int. XD | 2019/02/16 10:30 | Lamsfuss/Seidel v Ivanov V / Sozonov I | L | 2-0 |
| Giraldilla Int. XD | 2019/02/14 14:30 | Ivanov V / Sozonov I v Lamsfuss/Seidel | W | 2-1 |
| Dutch Open MD | 2019/10/12 13:30 | Liao M C / Su C H v Ivanov V / Sozonov I | W | 1-2 |
| Dutch Open MD | 2019/10/11 16:30 | Lu/Yang v Ivanov V / Sozonov I | W | 1-2 |
| Dutch Open MD | 2019/10/10 15:55 | Ivanov V / Sozonov I v Jansen J R / Kaesbauer P | W | 2-1 |
| Dutch Open MD | 2019/10/09 08:35 | Ivanov V / Sozonov I v Bay J / Mikkelsen M | W | 2-0 |
| Korea Open MD | 2019/09/25 11:20 | Ivanov V / Sozonov I v Goh/Izzuddin | L | 0-2 |
| Fuzhou China Open 2019, MD | 2019/09/18 05:05 | Lee / Wang v Ivanov V / Sozonov I | L | 2-0 |
| Chinese Taipei Open 2019, MD | 2019/09/04 14:10 | Ivanov V / Sozonov I v Lee / Wang | L | 1-2 |
| World Championships MD | 2019/08/21 08:20 | Ivanov V / Sozonov I v Kamura T / Sonoda K | L | 1-2 |
| Dutch Open MD | 2019/10/12 15:30 | Lamsfuss/Seidel v Ou X Y / Zhang N | W | 2-1 |
| Dutch Open MD | 2019/10/11 17:10 | Maas J / Tabeling R v Lamsfuss/Seidel | W | 0-2 |
| Dutch Open MD | 2019/10/10 16:25 | Bay-Smidt M / Moelhede L v Lamsfuss/Seidel | W | 0-2 |
| Dutch Open MD | 2019/10/09 10:35 | Geiss B / Volker J C v Lamsfuss/Seidel | W | 0-2 |
| Fuzhou China Open 2019, MD | 2019/09/18 10:15 | Lamsfuss/Seidel v Inoue T / Kaneko Y | L | 0-2 |
| Vietnam Open MD | 2019/09/12 09:20 | Na S S / Wang C v Lamsfuss/Seidel | L | 2-1 |
| Vietnam Open MD | 2019/09/11 13:50 | Chang / Lu v Lamsfuss/Seidel | W | 1-2 |
| World Championships MD | 2019/08/22 14:00 | Liu/Zhang v Lamsfuss/Seidel | L | 2-0 |