Ballcourt A11 encloses the west side of the Group A plaza, separating it from the retaining wall dropping off to the ravine behind the ballcourt. It is a sunken ballcourt with a north-south orientation and is entirely enclosed. A short sunken stairway leads from the plaza to the top of the south wall. Another stairway descends the south wall to the southern end zone of the ballcourt. A matching stairway in the northern end zone provides access from that direction. The interior of the ballcourt playing area measures north-south and the playing alley is wide between the side benches. The walls were built of small stone slabs and have a slight slope; as is common with the architecture of Mixco Viejo (Jilotepeque Viejo), the walls were topped with vertical cornices. However, the end zone walls are all completely vertical. Fragments of stucco recovered around the ballcourt indicate that it was at least partly coated.