It's unlikely that Lionel Messi and Cristiano Ronaldo smoke at all, but here is how their rivalry is helping curb London's cigarette litter problem.
An environmental protection group in the English capital, called Hubbub, has found a clever way to keep their streets free of cigarettes, or 'stompies'.
The group has produced a box in which smokers can dump their finished cigarettes, but on the box it asks the question: Who is the best player in the world?
Smokers "vote" by placing their cigarette in the slot marked for the player.
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