The referee of the 28 May 2011 football match at Wembley Stadium participated in the 2010 FIFA World Cup.
Viktor Kassai ("Kassai Viktor", : ; born 10 September 1975) is a Hungarian football referee. 
 He participated in the 2010 FIFA World Cup and refereed the 2011 UEFA Champions League Final. 
The 2011 UEFA Champions League Final was a football match played on 28 May 2011 at Wembley Stadium in London that decided the winner of the 201011 season of the UEFA Champions League. 
