One of the things that makes football so intriguing is the occasional inability to explain failure or success.

Nobody, fans or highly paid pundits, can come up with a reason (or reasons) why champion Chelsea capitulated this season. In the end we all agreed it was because Jose Mourinho lost the dressing room, though there is no doubt more to it than that. We shall have to wait for a player's book.

The rise and rise of Leicester City has baffled everyone, even its team. If Einstein were a football supporter he'd struggle to put his finger on why a side can go from relegation near-certainty a year ago to Premier League title favorite. Having pulled off an unlikely survival act last May, Leicester appointed Claudio Ranieri, who had been sacked by Greece after four games, the last a home defeat to the Faroe Islands.