VIDEO: Ronaldo booked for diving - but should it have been a penalty?

It what looks like a clear example of the boy who cried wolf, Cristiano Ronaldo was booked for diving last night, even though replays seem to show he should have been awarded a penalty.

The Portuguese star was playing for Real Madrid against Rayo Vallecano in La Liga - and was shown a yellow card following a heavy challenge from Rayo defender Antonio Amaya.