Germany v Portugal (Kick-off 5.00pm) RTE 2, UTV

Group G gets under way with this clash between two highly fancied European sides at the Arena Fonte Nova in Salvador, Brazil. The Germans may not have won a World Cup since 1990 but they haven't been too far off since - losing to Brazil in the 2002 final before finishing third in both 2006 and 2010. Portugal didn't exactly blow anyone away in their qualifying campaign but they do also have Cristiano Ronaldo on their side. If posers could win the World Cup, Portugal would certainly walk away with it 'ey.

Iran v Nigeria (Kick-off 8.00pm) RTE 2, BBC1

Coverage of the clash at the Arena da Baixada in Curitiba, Brazil, where the teams play their first match in Group F. This is only the second-ever meeting between these nations, and the first at a World Cup, and both will see this as an ideal opportunity to start the tournament with a positive result ahead of fixtures against Argentina and Bosnia-Herzegovina.

Ghana v USA (Kick-off 11.00pm) RTE 2, BBC1

More action from Group G today as the Americans make their debut in the tournament along with the Ghana team. With Germany and Portugal also in this group, these teams are clearly the two underdogs in the quest to reach the last 16, but there is no doubt they have the quality to cause an upset, and three points here would be a major boost to their chances.

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