The Los Blancos defender was on the wrong side of a surprise upset and concedes his side face a battle for domestic silverware this season
Marcelo admitted Real Madrid's shock loss to Real Mallorca "hurts" as the La Liga giants lost top spot to defending champions Barcelona.
Madrid crashed to their first La Liga defeat of the season, with Zinedine Zidane's 10-man visitors succumbing to Lago Junior's early strike at Son Moix on Saturday.
Bitter rivals Barca leapfrogged Madrid into top spot thanks to their win over Eibar earlier in the day, and left-back Marcelo lamented the result away from home.