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.
Comparison of American football and rugby union
Although both codes are played on similar sized rectangular fields, the dimensions of rugby union fields can vary up to a maximum size that is larger than the fixed size of American football fields. Rugby union fields are limited to a maximum length of long ( between goal lines) and width of , while American football fields have a fixed length of ( between goal lines) and a width of . The scoring "end zone" in American football has a fixed depth of whilst in Rugby Union the goal area must be between a minimum depth of and a maximum of between the goal line and the dead ball line at the rear of the field.