Martinez warns England & Belgium's World Cup rivals that his side are '100 per cent ready'

Roberto Martinez has declared Belgium "100 per cent ready for the World Cup" after they wrapped up their preparations for Russia with a 4-1 victory over Costa Rica.

Romelu Lukaku scored twice as the Red Devils overcame the setback of conceding the opening goal to run out comfortable winners in Brussels on Monday.

Dries Mertens and Michy Batshuayi also grabbed goals for Belgium, who open their Group G campaign against Panama in Sochi on June 18.

Having drawn 0-0 in a friendly with Portugal on June 2, Martinez felt the display against Costa Rica demonstrated how his squad are coming together nicely ahead of the tournament.