A second-half header from Amauri helped Juventus to a 1-0 Serie A victory over Siena as they snapped a four-match winless streak on Sunday. The Brazilian-born striker scored the winner in the 72nd minute when he rose above two defenders to head home a free-kick from Diego. "It is true that we can improve but it was important to win and I think today we deserved it," Juventus coach Ciro Ferrara said after the game. "We did not create many opportunities but we never risked and this is important." Juventus are third in the Serie A with 18 points from nine games, two behind second-placed Sampdoria and four adrift of leaders Inter Milan. The match's goal