Polo taken. The official set of rules and rules interpretations are reviewed and published annually by each country's polo association. Most of the smaller associations follow the rules of the Hurlingham Polo Association, the national governing body of the sport of polo in the United Kingdom, and the United States Polo Association. Outdoor or field polo consists of four to eight 7-minute chukkas, between or during which players change mounts. At the end of each 7 minute chukka, play continues for an additional 30 seconds or until a stoppage in play, whichever comes first. There is a four-minute interval between chukkas
Rules of water polo death periods if the tie persists after the 2 periods of play. Tournaments can modify their rules to incorporate regulation, sudden death immediately following 4 periods of the game, or a shoot-out. The game of water polo requires numerous officials. The four main categories are: referee, secretary, timekeeper and goal judge. These can again be qualified into two broader categories: game officials and table officials. The game officials in water polo consist of the referee(s), exclusion secretary, game/shot clock operator(s), and goal judges. Game officials are broadly responsible for ensuring the game runs smoothly and that correct and fair decisions