An eternal rivalry in our beautiful game, Boca Juniors and River Plate are two iconic football clubs hailing from the Argentinean capital, Buenos Aires.
Both these teams feature in the "Superclasico", a term derived in Argentina but was later adapted as "Clasico" in various countries, including Spain and Mexico.
In April 2004, English newspaper The Observer put the Superclasico at the top of their list of "50 sporting things you must do before you die", stating that "Derby day in Buenos Aires makes the Old Firm game look like a primary school kick-about."
We're sure you might have seen multiple videos on social media showcasing just how intense things get between these clubs' two sets of fans.
Imagine being part of the most ferocious derby in world football as a player and still having the gall to play for both teams in such a hostile environment!
There are over 100 players who have gone on and done just that!
Who are some of those notable names? Let's take a look!