The UEFA Champions League provides the perfect barometer for the level of the game each and every season. New standards are set each year, and the team who has adapted most usually comes out on top.
As the quarterfinals come to an end and the semifinals roll onto the horizon we can look back at the year that was. What did we learn from the world's greatest club competition this term?
Has the era of English dominance truly come to an end? Will Spanish teams continue to control the competition for years to come? Or is there another power growing in the shadows unchecked?
Here, Willie Gannon looks at 13 of the biggest lessons learned in the 2012-13 Champions League season.
What are your favourite and defining moments, and what is your biggest lesson of the UCL 2013?
Leave your comments, suggestions and best Champions League moments in the comment section below!