1. Spain vs Portugal
The battle between Spain and Portugal tops the list where two main Real Madrid stars Cristiano Ronaldo, and Sergio Ramos will be defending their respective nation against each other.
Despite Spain having a squad depth with full of quality players, it might fail to matter if Ronaldo and his men can rise on the big occasion.
Both nations are very familiar with each other, as they have clashed against each other 36 times before with Spain leading by quite a huge margin.
Out of the 36 matches, Spain won 17 while Portugal only managed to win only six. Thirteen games resulted in a draw.
The world will be waiting to see their 37th match on the grandest stage and which is also arguably the most hyped-up group stage match of this year’s FIFA World Cup 2018.
FIFA Ranking: Spain 4, Portugal 8
Head to Head: Spain 17, Portugal 6
Overall form: Spain – W D D W W, Portugal – L W D W W