3. Jonatan Christie vs Kento Momota (Jepang), 13-21, 0-15 (retired/mengundurkan diri karena cedera pinggang).
4. Tommy Sugiarto vs Sameer Verma (India), 21-17 (retired/mengundurkan diri karena cedera).
5. Greysia Polii/Apriyani Rahayu vs Huang Dong Ping/Zheng Yu (China), 21-14, 10-21, 13-21.
6. Praveen Jordan/Melati Daeva Oktavianti vs Feng Yan Zhe/Du Yue (China), 21-16, 18-21, 21-17.***
Jadwal semifinal Denmark Open 2021:
1. Praveen Jordan/Melati Daeva Oktavianti vs Dechapol Puavaranukroh/Sapsiree Taerattanachai (Thailand)
2. Tommy Sugiarto vs Kento Momota (Jepang).***