Cristiano Ronaldo and Lionel Messi in the Last 8 of the World Cup? Russia and the football world will be rooting for these two stars when the knockout stage begins today in Kazan and Sochi respectively. Messi's Argentina will lock horns against France while Ronaldo's Portugal will face Uruguay.

Both had played against each other on numerous occasions representing their clubs —Messi for FC Barcelona and Ronaldo for Manchester United and Real Madrid but they have never clashed in a World Cup.