The Argentine veteran has stressed that they always felt they were going to bag the full three points, and added that their opponent put up a strong fight.Inter midfielder Javier Zanetti has stressed that the Nerazzurri never lost belief that they would beat Siena in Sunday afternoon\'s Serie A clash.A late Luc Castaignos strike helped Inter to the full three points and Zanetti felt they deserved their hard-fought win against the Tuscan side.\"It was all down to a good Siena display as they waited patiently and didn\'t allow us much space. Our team were convinced about winning right up to the last minute,\" Zanetti said to Sky Sport Italia.\"Siena is a difficult place to play and we struggled a bit during the match, but wins like these are good for confidence. We just have to keep it up, and we know we can\'t drop any more points.\"We are improving. We beat Cagliari, we are leaders in our Champions League group and today we deserved to win because we didn\'t take any risks against a team that can play well.\"Inter\'s next match is the home game against Udinese on December 3.