Tennis polo
The sport is played on a grass field between 80 and 100 yards long and 50 to 65 yards wide. The goal area is a semicircular line with an 11-yard radius and the penalty mark at 13 yards from the goal. An experimental rule has a second semicircular line on the field with a 17-yard radius. Generally, a field for gridiron football or soccer can be used.
American football
Football games are played on a rectangular field that measures long and wide. Lines marked along the ends and sides of the field are known respectively as the end lines and sidelines, and goal lines are marked inward from each end line. Weighted pylons are placed on the inside corner of the intersections of the goal lines and end lines.