| Syed Modi Int. XD | 11/29 10:45 | 3 | Gicquel/Delrue v Seidel / Efler | L | 2-1 | |
| Syed Modi Int. XD | 11/28 11:50 | 4 | Seidel / Efler v Chopra P J / Reddy N S | W | 2-1 | |
| Syed Modi Int. XD | 11/27 13:35 | 5 | Seidel / Efler v Garaga / S Ram | W | 2-0 | |
| Hong Kong Open 2019, XD | 11/12 09:30 | 5 | Seidel / Efler v Wang / Huang | L | 0-2 | |
| Fuzhou China Open 2019, XD | 11/05 02:00 | 5 | Zheng / Huang v Seidel / Efler | L | 2-0 | |
| SaarLorLux Open 2019, XD | 11/01 14:00 | 3 | Chen K / Dong W J v Seidel / Efler | L | 2-0 | |
| SaarLorLux Open 2019, XD | 10/31 09:45 | 4 | Kaesbauer P / Kaepplein L v Seidel / Efler | W | 0-2 | |
| SaarLorLux Open 2019, XD | 10/29 16:20 | 5 | Mairs G / Williams V v Seidel / Efler | W | 0-2 | |
| Open de France - Doubles Mixtes | 10/23 08:10 | 5 | Hoki T / Nagahara W v Seidel / Efler | L | 2-1 | |
| Denmark Open XD | 10/16 07:40 | 5 | Chopra P J / Reddy N S v Seidel / Efler | L | 2-0 | |
| Dutch Open XD | 10/08 16:20 | 5 | Ren / Zhou v Seidel / Efler | L | 2-1 | |
| Fuzhou China Open 2019, XD | 09/19 04:30 | 4 | Zheng/Huang v Seidel / Efler | L | 2-0 |