Argentina v Belgium (17:00 BST, Saturday)published at 13:53 British Summer Time 3 July 2014
"Here I am at the feet of Messi. It's like waiting for a rollercoaster to start," tweets the World Cup Brazuca ball.
Messi is the player who has completed the most dribbles at this World Cup with 24 and created the most chances for his teammates (18).