Mark Geiger
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Mark William Geiger is an American sports administrator and former soccer referee. He is the senior director of match officials at the Professional Referee Organization (PRO), which oversees domestic referees in Major League Soccer (MLS). Geiger previously officiated in MLS and was on the FIFA International Referees List from 2008 to 2019. At the international level, Geiger refereed the 2012 Olympics, the 2013, 2015, and 2017 CONCACAF Gold Cups, and the 2014 and 2018 FIFA World Cups. At the 2014 World Cup, he became the first referee from the United States to officiate a knockout match at a World Cup tournament. Before becoming a full-time referee, Geiger was a high school mathematics teacher.
Geiger in 2018
Geiger signalling for advantage during a 2012 MLS match
Mark Geiger and goalkeepers Jordan Pickford from England and David Ospina from Colombia before the penalty shootout in the Round of 16
2018 FIFA World Cup Group B
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Group B of the 2018 FIFA World Cup took place from 15 to 25 June 2018. The group consisted of Portugal, Spain, Morocco, and Iran. The top two teams, Spain and Portugal, advanced to the round of 16.
2018 postage stamp from Russia depicting group B of the 2018 FIFA World Cup group stage
Mbark Boussoufa vs Rouzbeh Cheshmi
Portugal vs Spain
Younès Belhanda vs Gonçalo Guedes