El Clasico is probably the biggest rivalry in soccer history. Dating back to the days of Franco, the dictator, Real Madrid vs. Barcelona didn't just mean a game—it could mean life or death.
Not only is this a rivalry full of hatred, but the feeling towards the other team is apparent in matches, where play can get very physical.
Nowadays the rivalry is so big that the sense of anticipation before every match is like no other. Barcelona have Argentine star Lionel Messi, the best player in the world right now, while Madrid are led by Cristiano Ronaldo, the second best in the world.
The managers of the two teams are also two of the best in the world; Jose Mourinho and Pep Guardiola are always being compared.
Last year, the two teams met five teams, with Barcelona winning twice, Real Madrid triumphing once and two matches where nothing could separate the teams.
This weekend, there is a much-anticipated match in the Supercup, where the winner of La Liga (Barcelona) meets the winner of the Copa del Rey (Real Madrid).
Here are some key matchups for the weekend.