MADRID, Feb 1 : A penalty from Kylian Mbappe in the 10th minute of stoppage time rescued Real Madrid on Sunday, giving them an agonising 2-1 victory over local rivals Rayo Vallecano in LaLiga and keeping Los Blancos within one point of leaders Barcelona. Mbappe held his nerve to slot into the bottom left corner after Brahim Diaz was clumsily brought down in the box by Nobel Mendy deep into added time, calming down a furious Santiago Bernabeu crowd who were heavily booing their team's