| All England Open | 08/01 07:00 | 5 | 키티타라쿨 J / 프라종자이 R v Efler L / Janssens E | L | 2-0 | |
| All England Open | 07/30 07:50 | 6 | Efler L / Janssens E v 하니 D / 호스니 H | W | 2-0 | |
| Giraldilla Int. XD | 06/23 00:00 | 3 | 레펠 E / 트란 A v Efler L / Janssens E | L | 2-0 | |
| Giraldilla Int. XD | 06/22 02:30 | 4 | Efler L / Janssens E v Birch C / Moore J | W | 2-0 | |
| Giraldilla Int. XD | 06/20 16:00 | 5 | 아미트라파이 S / 초추원 P v Efler L / Janssens E | - | Walkover | |
| Giraldilla Int. XD | 06/15 02:30 | 4 | 카오 T W / 정 Y v Efler L / Janssens E | L | 2-0 | |
| Giraldilla Int. XD | 06/15 02:22 | - | 카오 T W / 유 X v Efler L / Janssens E | L | 2-0 | |
| Giraldilla Int. XD | 06/13 19:40 | 5 | 이 A / 리 S v Efler L / Janssens E | W | 0-2 | |
| Indonesia Masters XD | 11/02 15:20 | 4 | 스토에바 G/스토에바 S v Efler L / Janssens E | L | 2-0 | |
| Indonesia Masters XD | 11/01 14:00 | 5 | Efler L / Janssens E v Perminova N / Vislova N | W | 2-0 | |
| German Open 2019, WD, Qualification | 10/24 14:40 | 1 | Efler L / Janssens E v Huang K / Yu X | L | 0-2 | |
| German Open 2019, WD, Qualification | 10/17 14:20 | 1 | 칼슨 E / 마그누슨 J v Efler L / Janssens E | L | Retired | |
| German Open 2019, WD, Qualification | 10/17 09:40 | 1 | Efler L / Janssens E v Boje G / Lundgaard S | W | 2-1 | |
| Dutch Open WD | 10/12 08:00 | 5 | Efler L / Janssens E v Arkhangelskaya O / Rogova N | L | 0-2 | |
| All England Open | 09/13 06:40 | 5 | Jung K E / Shin S C v Efler L / Janssens E | L | 2-0 | |
| Indonesia Masters XD | 05/31 12:30 | 5 | Efler L / Janssens E v 키티타라쿨 J / 프라종자이 R | L | 0-2 | |
| Swiss Open WD | 03/15 19:20 | 5 | 수 Y C / 우 T J v Efler L / Janssens E | L | 2-0 | |
| Indonesia Masters XD | 03/07 14:18 | - | Seinen C / Tabeling I v Efler L / Janssens E | L | 2-1 | |
| All England Open | 03/01 15:46 | - | Efler L / Janssens E v 다나카 S / 요네모토 K | L | 0-2 | |
| All England Open | 03/01 14:00 | 5 | Efler L / Janssens E v 다나카 S / 요네모토 K | L | 0-2 | |
| Indonesia Masters XD | 02/28 11:03 | - | Ostermeyer K / Siahaya P v Efler L / Janssens E | W | 0-2 | |
| California Int. Women | 10/26 14:50 | 5 | 김 D / 유 Y S v Efler L / Janssens E | L | 2-0 |