1 of 2
Alvaro Barrientos, Associated Press
Barcelona's coach Pep Guardiola, right, gestures during their Spanish second-leg Copa del Rey soccer match against Osasuna at the Reyno de Navarra stadium in Pamplona, northern Spain, Thursday, Jan. 12, 2012.

MADRID — Real Madrid and Barcelona will have to overlook their upcoming clasico and focus on this weekend's league matches first.

Madrid and Barcelona meet for the eighth time since April come Wednesday's Copa del Rey first-leg quarterfinals match, but have league matches against Mallorca and Real Betis, respectively.

Madrid goalkeeper Iker Casillas says Madrid "cannot obsess" over Barcelona, and must take advantage of its five-point lead over the defending champions.

Casillas also believes the onslaught of clasicos has saturated the magnitude of one of world football's biggest derbies, saying the upcoming series is more comparable to "decaf" than full strength.