Question: when will the last 16 of the world cup be played

title: 2018 FIFA World Cup
text: show List of officials Confederation Referee Assistant referees Video assistant referees AFC Alireza Faghani ( Iran ) Reza Sokhandan ( Iran ) Mohammadreza Mansouri ( Iran ) Abdulrahman Al - Jassim ( Qatar ) Ravshan Irmatov ( Uzbekistan ) Abdukhamidullo Rasulov ( Uzbekistan ) Jakhongir Saidov ( Uzbekistan ) Mohammed Abdulla Hassan Mohamed ( United Arab Emirates ) Mohamed Al Hammadi ( United Arab Emirates ) Hasan Al Mahri ( United Arab Emirates ) Ryuji Sato ( Japan ) Toru Sagara ( Japan ) Hiroshi Yamauchi ( Japan ) Nawaf Shukralla ( Bahrain ) Yaser Tulefat ( Bahrain ) Taleb Al Maari ( Qatar ) CAF Mehdi Abid Charef ( Algeria ) Anouar Hmila ( Tunisia ) Malang Diedhiou ( Senegal ) Djibril Camara ( Senegal ) El Hadji Samba ( Senegal ) Bakary Gassama ( Gambia ) Jean Claude Birumushahu ( Burundi ) Abdelhak Etchiali ( Algeria ) Gehad Grisha ( Egypt ) Redouane Achik ( Morocco ) Waleed Ahmed ( Sudan ) Janny Sikazwe ( Zambia ) Jerson Dos Santos ( Angola ) Zakhele Siwela ( South Africa ) Bamlak Tessema Weyesa ( Ethiopia ) CONCACAF Joel Aguilar ( El Salvador ) Juan Zumba ( El Salvador ) Juan Carlos Mora ( Costa Rica ) Mark Geiger ( United States ) Frank Anderson ( United States ) Joe Fletcher ( Canada ) Jair Marrufo ( United States ) Corey Rockwell ( United States ) Ricardo Montero ( Costa Rica ) John Pitti ( Panama ) Gabriel Victoria ( Panama ) César Arturo Ramos ( Mexico ) Marvin Torrentera ( Mexico ) Miguel Hernández ( Mexico ) CONMEBOL Julio Bascuñán ( Chile ) Carlos Astroza ( Chile ) Christian Schiemann ( Chile ) Wilton Sampaio ( Brazil ) Gery Vargas ( Bolivia ) Mauro Vigliano ( Argentina ) Enrique Cáceres ( Paraguay ) Eduardo Cardozo ( Paraguay ) Juan Zorrilla ( Paraguay ) Andrés Cunha ( Uruguay ) Nicolás Tarán ( Uruguay ) Mauricio Espinosa ( Uruguay ) Néstor Pitana ( Argentina ) Hernán Maidana ( Argentina ) Juan Pablo Belatti ( Argentina ) Sandro Ricci ( Brazil ) Emerson de Carvalho ( Brazil ) Marcelo Van Gasse ( Brazil ) Wilmar Roldán ( Colombia ) Alexander Guzmán ( Colombia ) Cristian de la Cruz ( Colombia ) OFC Matthew Conger ( New Zealand ) Simon Lount ( New Zealand ) Tevita Makasini ( Tonga ) Norbert Hauata ( Tahiti ) Bertrand Brial ( New Caledonia ) UEFA Felix Brych ( Germany ) Mark Borsch ( Germany ) Stefan Lupp ( Germany ) Bastian Dankert ( Germany ) Artur Soares Dias ( Portugal ) Paweł Gil ( Poland ) Massimiliano Irrati ( Italy ) Tiago Martins ( Portugal ) Danny Makkelie ( Netherlands ) Daniele Orsato ( Italy ) Paolo Valeri ( Italy ) Felix Zwayer ( Germany ) Cüneyt Çakır ( Turkey ) Bahattin Duran ( Turkey ) Tarık Ongun ( Turkey ) Sergei Karasev ( Russia ) Anton Averianov ( Russia ) Tikhon Kalugin ( Russia ) Björn Kuipers ( Netherlands ) Sander van Roekel ( Netherlands ) Erwin Zeinstra ( Netherlands ) Szymon Marciniak ( Poland ) Paweł Sokolnicki ( Poland ) Tomasz Listkiewicz ( Poland ) Antonio Mateu Lahoz ( Spain ) Pau Cebrián Devís ( Spain ) Roberto Díaz Pérez ( Spain ) Milorad Mažić ( Serbia ) Milovan Ristić ( Serbia ) Dalibor Đurđević ( Serbia ) Gianluca Rocchi ( Italy ) Elenito Di Liberatore ( Italy ) Mauro Tonolini ( Italy ) Damir Skomina ( Slovenia ) Jure Praprotnik ( Slovenia ) Robert Vukan ( Slovenia ) Clément Turpin ( France ) Cyril Gringore ( France ) Nicolas Danos ( France )