Barcelona and Real Madrid will contest the 264th El Clasico when the Spanish giants come together in a La Liga clash on Sunday. Rarely will there have been a more highly charged atmosphere with a heavily demoralised Real arriving in the Catalan capital, facing the prospect of watching their fiercest rivals crowned champions on the day. Recommended Stories list of 4 items list 1 of 4 Superbike rider dies as course claims 20th victim in 97th year of racing list 2 of 4 International Olympic Committee recommends ending Belarus restrictions list 3 of 4 Irish footballers and celebrities urge boycott of Israel matches list 4 of 4 Sabalenka, Gauff threaten player boycott of French Open over prize money end of list Although knocked out of the UEFA Champions League at the quarterfinals, as Los Blancos were too, Barca are well on course to defend their La Liga crown – and at a canter. Al Jazeera Sport takes a look at the talking points heading into the game and what the history is of a 124-year-old rivalry.…