Restricted free agents defensive end Jason Hatcher and nose tackle Junior Siavii have signed their tender offers with the Dallas Cowboys. Hatcher was a third-round draft choice in 2006, taken 92nd overall. In 62 regular-season games, he has 113 tackles, 6 1/2 sacks, five tackles for a loss and 58 pressures. He appeared in all 16 games last season as part of the defensive line rotation, making 29 tackles.