OK fight might be the wrong term, perhaps tussle is a better word. Either way it appears that Mario Balotelli angered Rio Ferdinand in some manner and it appears it could have something to do with taunting Man United fans after the final whistle. Either way it was all something over nothing and Shaun Wright Phillips stepped in to stop anything get out of hand, which is quite brace given that the Man City winger is about a metre shorter than either protagonist!
Short version of the alteraction
A longer build up and then the altercation