The stone shows two people playing a Mesoamerican ball gameImage: Lorenzo Hernandez/REUTERS The piece displays Mayan hieroglyphic writing surrounding two players standing next to a ball. The Pok Ta Pok ball game was a traditional practice of Mesoamerican peoples. An apparent stone scoreboard has been discovered at the Chichen Itza archaeological site in southeastern Mexico, archaeologists have said. The piece measures just over 32 centimeters (12.6 inches) in diameter and weighs 40 kilograms (around 90 pounds). It dates from between A.D. 800 and 900. It displays Mayan hieroglyphic writing surrounding two players standing next to a ball, according to Mexico's...