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 shows a yellow card to England's Jamie Carragher during the World Cup group C soccer match between England and Algeria in Cape Town, South Africa, Friday, June 18, 2010. [Xinhua/AFP Photo]