The mounts are called 'polo ponies', although they are horses ranging from 14.2 to 16 hands high at the wither (one hand equals four inches), and weighing 900-1000 lbs. The polo pony is selected carefully for great speed and stamina, similar to the thoroughbreds at race tracks, as well as agility and maneuverability, similar to the cow pony used on ranches. When riding, by simply moving your hands forward, the horse will move into a swift canter. A well trained horse will carry his rider smoothly and swiftly to the ball and can account for anywhere from 70-80% of a player's ability and net worth to his team.
Each team consists of four mounted players, which can be mixed teams of both men and women. The Number 1 is expected to score the goals and carry out an offensive position. He is usually the least experienced. The Number 2 is also an offensive player but has to be more aggressive since his objective is also to break up the defensive plays of the opposition. The Number 3 is the pivot man, similar to a quarterback in football, and he is usually the long ball hitter and play maker for the team. He usually hits the penalty shots and knock-ins. The Number 4, or back, is the defensive player. He is usually the most conservative player and his job is to guard the goal and keep the opposition from scoring.