Refereeing at the World Cup explained: Match officials, VAR, offside technology and more - The Athletic
Robin van Persie scores glorious flying header to spur rout over Spain
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Brazilian referee Sandro Ricci in charge of Germany—Ghana - The Hindu
Mark Geiger to ref France-Nigeria, 1st American to work WC knockout game - Sports Illustrated
FIFA selects 25 referees for 2014 World Cup
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The One American On The Field At Today's World Cup Semifinal : The Two-Way : NPR
Philadelphia, USA. 5th November, 2014. Referee Dan Crawford (43) looks on during the NBA game between the Orlando Magic and the Philadelphia 76ers at the Wells Fargo Center in Philadelphia, Pennsylvania. The
American Referee Mark Geiger Makes World Cup History - ABC News
Mark Clattenburg Assigned to Referee Liverpool vs. Manchester City Showdown | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Howard Webb Chosen As England's Referee World Cup | HuffPost UK Sport
World Cup: Mark Geiger picked as first American referee since 2002 – San Bernardino Sun
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Refereeing debut – DW – 06/14/2014
Top soccer ref Howard Webb reveals how he endures OCD
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Adidas 14-15 Champions League Referee Kits Released - Footy Headlines
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Referee Yuichi Nishimura gestures during the 2014 FIFA World Cup... News Photo - Getty Images
3,869 Fifa 2014 Referees Photos and Premium High Res Pictures - Getty Images