No atmosphere compares to that of a true rivalry in world soccer. Whether you call it a Clasico, a derby or something entirely different, the passion and intensity at the greatest rivalry matches are unparalleled. SI's Grant Wahl ranks his favorite 10 rivalries in the world, spanning leagues all around the globe.
Auditing agency KPMG has ranked the top 10 soccer clubs in the world based on their value in an annual study, and two clubs on Jose Mourinho's resume–Real Madrid and Manchester United–lead the way. The valuations "include the popularity of clubs with their number of followers on social media, their sporting potential given the value of their players, TV rights and their ownership situation, notably of the stadiums," according to KPMG. Here's a look at the results.