Wojciech ##ka ##rl sorry for Adam Federici after his penalty Cup error . The referee let an Alexis penalty shot squirm into the net in extra - time . fans insists Federici ' was the best goalkeeper on the pitch ' at Wembley . Arsenal went onto win the semi - final 2 - 1 after the referee 's error . CLICK HERE for all the latest Arsenal news .
Wojciech Szczesny feels sorry for Adam Federici after his FA Cup error . The goalkeeper let an Alexis Sanchez shot squirm into the net in extra-time . Szczesny insists Federici 'was the best player on the pitch ' at Wembley . Arsenal went onto win the semi-final 2-1 after the goalkeeper 's error . CLICK HERE for all the latest Arsenal news .