During archaeological investigation of the ballcourt a well-preserved tennoned ballgame marker was found placed on the western bench. Its original placement was indicated by a hole in the upper part of the ballcourt wall. The second marker that would have been placed directly opposite the first has never been found and the area of the ballcourt wall where it would have been had collapsed prior to excavations. Replicas of the ballcourt marker have been placed in both walls; the original is in the Museo Nacional de Arqueología y Etnología in Guatemala City.