Game of Polo

Classically the game of polo is played on a flat grassy field 300 yards long and up to 160 yards wide (almost ten acres and equal to at least eight football fields!). 
There are four players on each team numbers 1 to 4; 1 and 2 are forwards while 3 and 4 play more in the back but all positions are interchangeable due to the speed and alacrity of the sport.
The rules of the game are centered around player and horse safety and pivot around an imaginary line of the ball and right of way, both of which must be respected.
A lot like not cutting too close in front of a car on the highway when changing lanes!
A player in a flat out gallop, in full possession of the ball and the line of the ball.