| Indonesia Masters XD | 05/23 13:30 | 1 | Ng T / Wu J v Efler L / Konon O | L | 2-1 | |
| Indonesia Masters XD | 04/25 17:15 | 5 | Efler L / Konon O v 스토에바 G/스토에바 S | L | 0-2 | |
| Giraldilla Int. XD | 03/28 17:10 | 5 | 쿠스마 F D / 수기아토 R v Efler L / Konon O | L | 2-0 | |
| Swiss Open WD | 02/23 11:40 | 3 | 스토에바 G/스토에바 S v Efler L / Konon O | L | 2-0 | |
| Swiss Open WD | 02/22 12:00 | 4 | Efler L / Konon O v 바소바 A / 푸흐소바 M | W | 2-1 | |
| Swiss Open WD | 02/21 14:50 | 5 | Burkart/Horbach v Efler L / Konon O | W | 0-2 | |
| Giraldilla Int. XD | 01/13 16:00 | 1 | 볼로토바 E / 다블레토바 A v Efler L / Konon O | L | 2-1 | |
| German Open 2019, WD, Qualification | 11/21 08:50 | 1 | 엔지 T Y / 유엔 S Y v Efler L / Konon O | L | 2-1 | |
| German Open 2019, WD, Qualification | 11/21 03:20 | 1 | Efler L / Konon O v Lui L L / Tsang H Y | W | 2-0 | |
| All England Open | 11/15 02:00 | 5 | Huang K / Yu X v Efler L / Konon O | L | 2-0 |