#1 Atletico's new stadium
This derby will be the first one ever at the Wanda Metropolitano stadium. It will certainly be a special occasion, but it won't have the special atmosphere of the Vicente Calderon stadium.
The Calderon was Atletico's home for over 50 years. It was filled with various memories and special emotions. When you had to play there as a visitor, you knew you would be in for a tough time and even avoiding a defeat could've looked like a big accomplishment.
At first, the Wanda Metropolitano surely won't have the same feeling, for either side on the pitch.
Atletico has struggled during their early days at the 67,700 capacity stadium that will host the 2019 Champions League final. They have won only half of their four league games there, scoring just five times. Back in September, a 2-1 Chelsea win meant that Atletico lost at home to an English team for the first time ever.
The Vicente Calderon stadium, which was opened in October 1966 is a pretty old stadium and it will take some time to build the same kind of intimidating atmosphere at their new home.
The feeling of an unusual support could be the main reason why the Atleti players seem to be struggling to get results at home this season. It's been five seasons since they last failed to win at least 14 La Liga matches at home. Judging by the start made this year, this run seems to be heading towards an end.