Brussels Bike Polo
Cycle polo is a team sport, similar to traditional polo, except that bicycles are used instead of horses.
Traditional cycle polo is played in a rectangular grass field, 150 meters by 100 meters officially, unofficially whatever field is big enough. Moreover, official dimensions can vary between 120 and 150 meters in length on 80 to 100 meters in width. The ball used approximately 2.5 inches in diameter and the mallet is of length 1 meter.
There are 6 members (7 in France) on a team of which 4 (5 in France) are on field at a time. The other two are used as substitutes. International matches are played for a duration of 30 minutes divided into periods of 7.5 minutes each called as a chukkar. Extra time can be used to determine the winner in case the scores are tied at normal time.
If a deliberate foul is committed at the vicinity of the goal, the team that is fouled is automatically given a goal. Less severe fouls are awarded 15 metre and 25 metre free hits. In the event of deliberate fouls or dangerous fouls, the umpire can issue the Yellow card (warning) and in case of repeated or severe fouls the Red card (ejection). The ejected player can be replaced by a substitute after the end of the current chukkar if the umpire allows it.
(Wikipedia)