Real Madrid goalkeeper Iker Casillas has stated his belief that this season's local derbies against Atletico Madrid will be tough.
Although Atletico have not won at the Bernabeu in 13 years, Casillas has been impressed with the form of Real's rivals this season.
"It's clear that it will be a different derby compared to others in recent years," Casillas said.
"Atletico are coming to the Bernabeu in great form.
"They are coming into the game having beaten Seville, a team that saw off a Betis side that beat us last Saturday."
Madrid face Atletico at the Bernabeu on Saturday.
