Mark Lamsfuss/Isabel Lohau (Jerman) vs Praveen Jordan/Melati Daeva Oktavianti
Skor: 14-21, 21-18, 12-21 (Menang)
Marcus Fernaldi Gideon/Kevin Sanjaya Sukamuljo vs Daniel Lundgaard/Mathias Thyrri (Denmark)
Skor: 21-14, 21-15 (Menang)
Leo Rolly Carnando/Daniel Marthin vs Mohammad Ahsan/Hendra Setiawan
Skor: 22-20, 21-17 (The Babies Menang, The Daddies Kalah)
Chisato Hoshi/Aoi Matsuda (Jepang) vs Nita Violina Marwah/Putri Syaikah
Skor: 21-16, 21-9 (Kalah)
Dechapol Puavaranukroh/Sapsiree Taerattanachai (Thailand) vs Hafiz Faizal/Gloria Emanuelle Widjaja
Skor: 20-22, 21-16, 21-16 (Kalah)
Rinov Rivaldy/Pitha Haningtyas Mentari vs Niclas Nohr/Amalie Magelund (Denmark)
Skor: 20-22, 21-18, 21-13 (Menang)
Jadwal Semifinal Hylo Open 2021
Court 1
19.00 WIB: Marcus Fernaldi Gideon/Kevin Sanjaya Sukamuljo vs Supak Jomkoh/Kittinupong Kedren (Thailand)
Estimasi 19.50 WIB: Yeo Jia Min (Singapura) vs Michelle Li (Kanada)