One of world football's biggest rivalries renews on Sunday when Barcelona host Real Madrid in La Liga's El Clasico. The Spanish fixture’s relevance seemed to wane as the Messi-Ronaldo rivalry faded. Can Lamine Yamal and Kylian Mbappé lift it into a new era? With an hour-long pre-match show and an immersive broadcast, the broadcaster hopes to give the crucial game a showcase in the U.S.