Paraguay – Spain
Referee 1: Khalid Hnich (MAR, photo)
Referee 2: Aymen Kammoun (TUN)
Third Official: Mohamed Hassan (EGY)
Timekeeper: Tarek El-Khataby (EGY)
Reserve AR: Cedric Pelissier (FRA)
Serbia – Iran
Referee 1: Carlos Gonzalez (GUA)
Referee 2: Gean Telles (BRA)
Third Official: Daniel Matkovic (SUI)
Timekeeper: Borislav Kolev (BUL)
Reserve AR: Valeria Palma (CHI)
Angola – Japan
Referee 1: Diego Molina (CRC)
Referee 2: Jorge Flores (SLV)
Third Official: Eduardo Coelho (POR)
Timekeeper: Christopher Sinclair (NZL)
Reserve AR: Antony Riley (NZL)
Argentina – USA
Referee 1: Ondrej Cerny (CZE)
Referee 2: Chiara Perona (ITA)
Third Official: Nikola Jelic (CRO)
Timekeeper: Roberto Lopez (PAN)
Reserve AR: Daniel Rodriguez (URU)
15 September 2021
Costa Rica – Venezuela
Referee 1: An Ran (CHN)
Referee 2: Tomohiro Kozaki (JPN)
Third Official: Alejandro Martinez (ESP)
Timekeeper: Irina Velikanova (RUS)
Reserve AR: Fahad Al-Hosani (UAE)
Egypt – Guatemala
Referee 1: Gelareh Nazemi (IRN)
Referee 2: Ebrahim Mehrabi (IRN)
Third Official: Nurdin Bukuev (KGZ)
Timekeeper: Ryan Shepheard (AUS)
Reserve AR: Carlos Martinez (PAR)
Lithuania – Kazakhstan
Referee 1: Gabor Kovacs (HUN)
Referee 2: Nikola Jelic (CRO)
Third Official: Josh Wilkens (USA)
Timekeeper: Juan Cordero (ESP)
Reserve AR: Hussain Al Bahhar (BHR)
Uzbekistan – Russia
Referee 1: Cristian Espindola (CHI)
Referee 2: Ronny Castro (CRC)
Third Official: Maria Pinto (ARG)
Timekeeper: Henry Gutierrez (BOL)
Reserve AR: Dario Santamaria (ARG)
Referee 1: Khalid Hnich (MAR, photo)
Referee 2: Aymen Kammoun (TUN)
Third Official: Mohamed Hassan (EGY)
Timekeeper: Tarek El-Khataby (EGY)
Reserve AR: Cedric Pelissier (FRA)
Serbia – Iran
Referee 1: Carlos Gonzalez (GUA)
Referee 2: Gean Telles (BRA)
Third Official: Daniel Matkovic (SUI)
Timekeeper: Borislav Kolev (BUL)
Reserve AR: Valeria Palma (CHI)
Angola – Japan
Referee 1: Diego Molina (CRC)
Referee 2: Jorge Flores (SLV)
Third Official: Eduardo Coelho (POR)
Timekeeper: Christopher Sinclair (NZL)
Reserve AR: Antony Riley (NZL)
Argentina – USA
Referee 1: Ondrej Cerny (CZE)
Referee 2: Chiara Perona (ITA)
Third Official: Nikola Jelic (CRO)
Timekeeper: Roberto Lopez (PAN)
Reserve AR: Daniel Rodriguez (URU)
15 September 2021
Costa Rica – Venezuela
Referee 1: An Ran (CHN)
Referee 2: Tomohiro Kozaki (JPN)
Third Official: Alejandro Martinez (ESP)
Timekeeper: Irina Velikanova (RUS)
Reserve AR: Fahad Al-Hosani (UAE)
Egypt – Guatemala
Referee 1: Gelareh Nazemi (IRN)
Referee 2: Ebrahim Mehrabi (IRN)
Third Official: Nurdin Bukuev (KGZ)
Timekeeper: Ryan Shepheard (AUS)
Reserve AR: Carlos Martinez (PAR)
Lithuania – Kazakhstan
Referee 1: Gabor Kovacs (HUN)
Referee 2: Nikola Jelic (CRO)
Third Official: Josh Wilkens (USA)
Timekeeper: Juan Cordero (ESP)
Reserve AR: Hussain Al Bahhar (BHR)
Uzbekistan – Russia
Referee 1: Cristian Espindola (CHI)
Referee 2: Ronny Castro (CRC)
Third Official: Maria Pinto (ARG)
Timekeeper: Henry Gutierrez (BOL)
Reserve AR: Dario Santamaria (ARG)