Neck Shot - A ball hit under the neck of a pony. Tail Shot - Hitting a ball behind the pony. In The game is started with a throw-in, whereby the ball is literally thrown in between the lined up teams by the umpire. Umpires These are the on-field officials. Mounted on horses, the umpires wear black and white, vertically striped shirts to identify them.
Most polo umpires are active players.
The United States Polo Association. The governing body of polo. A player will often use one color for all of his horses.