Speed and strength are combined with teamwork and a high degree of fitness in this sport. In a single game, a single outfielder may traverse up to two miles is Waterpolo Sport.
Water polo teams consist of 13 players in senior and most junior games. At any given moment, each side is permitted to have seven players in the water: six outfield players and one goalie. During a game, participants, with the exception of the goalkeeper, circulate around the pool continually. Most teams have one central defender, one centre forward, two drivers, and two wingers in their outfield.
Because of the significant amount of gripping and pushing that occurs during the game, water polo players require exceptional stamina. the game is so quick and exhausting, each side is permitted a maximum of six substitutions (one goalkeeper and five outfield players).
Players can be substituted in and out of the game at any time, with the exception of the goalkeeper, who can only be replaced by a substitute goalie, and outfield players, who can only be replaced by designated outfieldsubstitutes.
The person that enters the game can only do so at the following times:
- When there are pauses in between phases of play.
- Following the scoring of a goal.
- During a break.
