One of their key players will be 21-year-old Romelu Lukaku, who will start up front in the place of injured forward Christian Benteke.
In Belgium's first pre-World Cup friendly against Luxembourg - a comfortable 5-1 win - Lukaku scored a hat trick. His third goal was a stunner. He dribbled around two defenders and fired a left-footed shot to the near post as a third defender dove in to block it.
Great individual goal. Here's the best angle:
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Check out the full video: