Ravshan Irmatov and Viktor Kassai will referee the World Cup semifinals, FIFA said on Monday. Uzbekistan's Irmatov will take charge of the Netherlands-Uruguay match, and Kassai will officiate the Germany-Spain match. Referee Ravshan Irmatov of Uzbekistan at the 2010 World Cup quarter-final soccer match between Argentina and Germany at Green Point stadium in Cape Town July 3, 2010. [Xinhua/AFP Photo]