Sant Joan Despí (Spain), 5 Dec (EFE).- Barcelona manager Gerardo 'Tata' Martino assumed Thursday responsibility for his team's two consecutive defeats against Ajax and Athletic Club. <br /><br /> <br /><br />"The responsibility for the defeats is absolutely mine, the team lost its shape, above all after the goal at the San Mamés," explained Martino, who is concerned that his players have been incapable of coming back from two adverse scores. "When we let in a goal and there are only a few minutes left, the team becomes desperate", he stated. <br /><br /> <br /><br />SHOTLIST: FOOTAGE AND SOUND BITES GERARDO 'TATA' MARTINO PRESS CONFERENCE. <br /><br /> <br /><br />Keywords: efe,football,soccer,barcelona,cartagena,copa,del,rey. <br /><br /><br /><br />© EFE 2013. Está expresamente prohibida la redistribución y la redifusión de todo o parte de los contenidos de los servicios de Efe, sin previo y expreso consentimiento de la Agencia EFE S.A.