| WTT Star Contender Goa WD Quals | 01/24 07:40 | - | Lee Z / Yoon H v Kallberg/Bergand | L | 2-3 | |
| WTT Contender Doha WD | 01/17 16:05 | 4 | 바트라 M / 카맛 A G v Lee Z / Yoon H | L | 3-1 | |
| WTT Contender Tunis WD | 08/04 09:00 | - | Harimoto/Nagasaki v Lee Z / Yoon H | L | 3-1 | |
| WTT Contender Tunis WD | 08/03 09:00 | - | 베글진 A / 베글진 K v Lee Z / Yoon H | W | 1-3 | |
| WTT Feeder Otocec WD | 06/24 15:00 | - | Lee Z / Yoon H v 이 H C / 수 W Y M | L | 1-3 | |
| WTT Feeder Otocec WD | 06/23 17:38 | - | Zong/Qin v Lee Z / Yoon H | W | 0-3 | |
| WTT Feeder Ototec WD Quals | 06/22 09:00 | - | Lee Z / Yoon H v Sevcikova/Stepanova | W | 3-0 | |
| WTT Feeder Ototec WD Quals | 06/20 09:30 | - | Scholz/Solja v Lee Z / Yoon H | W | 2-3 | |
| Qatar Open XD | 05/19 06:00 | 1 | Lee Z / Yoon H v 파라낭 O / 사웨타붓 S | L | 1-3 | |
| Qatar Open 2019, MS | 09/09 15:04 | - | Lee Z / Yoon H v Noskova Y / Prokhorova Y | L | 0-3 | |
| Qatar Open XD | 09/01 16:05 | - | Lee Z / Yoon H v 발린트 B / 네이지바라디 M | L | 1-3 |