Sant Joan Despí (Spain), 30 Nov (EFE).- Barcelona manager Gerardo Martino has played down Tuesday's loss in Amsterdam to the point where he admitted that he would sign a document guaranteeing one defeat in the next twenty games. <br /><br /> <br /><br />Despite this admission, the Argentine acknowledged Saturday in front of journalists at Barcelona's sports complex that he is waiting for a reaction from his players at the San Mamés stadium Sunday to avoid giving the impression that there is a trend of poor football and poor results. <br /><br /> <br /><br />SHOTLIST: FOOTAGE AND SOUND BITES GERARDO MARTINO PRESS CONFERENCE. <br /><br /> <br /><br />Keywords: efe,football,soccer,barcelona,athletic,bilbao,liga,spain. <br /><br /><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.