Running on water will rarely go well. Unless you are Jesus, you will fail.
And when you add Ronaldinho kicking balls at your head, it will definitely not go well.
See, here's the thing: Ronaldinho is really good at kicking the ball at the exact target he chooses. It is one of the many things that made him one of the best footballers of his generation. When he picks a place to kick a ball, he hits it.
He hit that guy's head.