Barcelona legend Xavi says Lionel Messi and Real Madrid star Cristiano Ronaldo drive eachother on.
However, Xavi rates Messi the better player.
He explained: "Messi wouldn't be as good without Ronaldo. He wouldn't have won all those Ballon d'Ors. And I don't think Ronaldo would have won them all too. They push each other.
"The difference between the two is that while they're both great goalscorers, Messi is much more involved in the play of the team."
Source: tribalfootball.com