The Bernabeu outfit have already been beaten by their city rivals four times this season and will face them twice more in the Champions League
Iker Casillas has admitted Real Madrid face a tough test after being drawn against Atletico Madrid in the quarter-finals of the Champions League.
Madrid overcame Schalke over two legs in the last 16, while Atletico saw off Bayer Leverkusen to set up the tie, but it is Diego Simeone’s men who will head into the game with greater confidence.
Despite trailing their neighbours by eight points in La Liga, the reigning champions of Spain have already beaten Carlo Ancelotti’s side four times this season.
Their last success came back in February when they recorded a thumping 4-0 league victory over Madrid at the Vicente Calderon and Casillas is expecting two difficult encounters in Europe.
“We’ve run into Atletico Madrid again in the Champions League,” the goalkeeper wrote on Twitter. “They are two Madrid derby matches that will be very tough.”
Casillas is under immense pressure to retain his place in Ancelotti’s side after an error-strewn display in the second leg against Schalke.
The 33-year-old was dropped by Jose Mourinho during his spell in charge of the club and replaced by Diego Lopez before regaining his spot following the appointment of the Italian.
But his mistakes against the Bundesliga outfit mean he faces stern competition from deputy keeper Keylor Navas for a starting berth in the weeks ahead.