River Boca
The Superclásico is known worldwide as one of the fiercest and most important derbies.[8] In April 2004, the English newspaper The Observer put the Superclásico at the top of their list of "50 sporting things you must do before you die", saying that "Derby day in Buenos Aires makes the Old Firm game look like a primary school kick-about",[9] in 2016 the British football magazine FourFourTwo considered it the "biggest derby in the world",[10] The Daily Telegraph ranked this match as the "biggest club rivalry in world football" in 2016,[11] and the Daily Mirror placed it #1 in The top 50 football derbies in the world, above El Clásico between FC Barcelona and Real Madrid C.F., in 2017.[12]
https://en.wikipedia.org/wiki/Superclásico