UEFA has appointed Wolfgang Stark of Germany to referee co-host Poland's clash with Russia in the European Championship on Tuesday.
Jonas Eriksson of Sweden will handle the meeting of old rivals Germany and the Netherlands on Wednesday in Kharkiv, Ukraine.
UEFA has made Stephane Lannoy of France the first referee to get two matches at Euro 2012. Lannoy gets the Greece vs. Czech Republic match in Wroclaw in Tuesday, after handling Germany's 1-0 win over Portugal on Saturday.
Scottish referee Craig Thomson will referee Denmark vs. Portugal in Lviv, Ukraine, on Wednesday.
With the first 12 matches now allocated, Champions League final referee Pedro Proenca of Portugal is the only referee yet to be awarded a match.