Which ancient soccer like game used a ball made of deer skin that was stuffed with sawdust?

The ancient game you're referring to is called "ulama," which was played by the indigenous peoples of Mesoamerica, particularly the Aztecs. In ulama, players used a ball made of deer skin that was stuffed with sawdust, and the game involved hitting the ball with the hips, forearms, or paddles. This sport held significant cultural and religious importance, often linked to rituals and ceremonies.