Casillas was first called up to Real Madrid's senior team during a Champions League match against Rosenborg when he was aged 16 in November 1997.
UCasillas uqale wabizwa eqenjini eliphezulu leReal Madrid ngesikhathi umdlalo weMig League ulwa noRosenborg ngesikhathi eneminyaka engu-16 ubudala ngoNovemba 1997.