| Vietnam Open WD | 09/13 12:25 | 5 | Nguyen L K / Nguyen P D V v Kleebyeesun/Laisuan | L | 0-2 | |
| Vietnam Open (WT) 2019, MD, Qualification | 09/12 04:35 | 4 | 창 E C / 첸 X-Y v Nguyen L K / Nguyen P D V | L | 2-0 | |
| Vietnam Open (WT) 2019, XD, Qualification | 09/12 01:30 | 4 | Nguyen L K / Nguyen P D V v Karunakaran/Variyath | L | 0-2 | |
| Vietnam Open MD | 09/28 05:20 | 5 | Nguyen L K / Nguyen P D V v Azriyn N M A A / Low J S | L | 0-2 | |
| Bonn Int. MD | 06/16 17:20 | - | Datko/Scheiel v Nguyen L K / Nguyen P D V | L | 2-0 | |
| Vietnam Open (WT) 2019, XD, Qualification | 09/10 01:40 | - | Nguyen L K / Nguyen P D V v 찌아 W J / 림 P Y P | L | 0-2 | |
| Vietnam Int. WD Qual | 04/09 09:20 | - | 쳉 Y C / 청 K-Y v Nguyen L K / Nguyen P D V | L | 2-1 | |
| Vietnam Int. XD Qual | 04/09 02:00 | - | Nguyen L K / Nguyen P D V v 나롱그릿 M / 수자이프라파라트 K | L | 0-2 | |
| German Open 2019, WD, Qualification | 08/07 07:00 | 1 | Hung Y-T / Tang W Y v Nguyen L K / Nguyen P D V | L | 2-0 | |
| Giraldilla Int. XD | 03/23 05:05 | 1 | 엠사르드 B / 엠사르드 N v Nguyen L K / Nguyen P D V | L | 2-0 | |
| Indonesia Masters XD | 03/22 03:22 | - | Nguyen L K / Nguyen P D V v Lin C H / Lee W T | L | 0-2 |