You may find this interesting from the rules of polo:

Penalties

The following penalties may be given.

A goal is given if the cross is dangerous or deliberate in the vicinity of the goal. The ball is then thrown in 10 yds in front of the goal without ends being changed.

Free hit from 30 yds opposite the centre of the goal - defenders to be behind the back line and outside th6 goal posts but must not ride through when the ball is hit.

Free hit from 40 yds, same conditions as b).
Free hit from 60 yds. Defenders to be 30 yds from ball.

Free hit from the centre of the ground, none of the defending side to be nearer than 30 yds when the ball is hit.

Free hit from spot where the foul took place, no defender to be nearer than 30 yds

Corners are not taken as in Association Football - instead, a free hit is given 60 yds from the goal from a spot opposite where the ball was hit behind the line, none of the defending side to be nearer than 30 yds.

Captains of teams are the only players who can discuss questions arising during a game. No player shall appeal in any manner to the Umpire for fouls, but me Captain can discuss any matter with the Umpire.