how many on a water polo team
London 2012 Olympics: water polo guide Read Telegraph Sport's guide to the water polo event at the London 2012 Olympics. Photo: EPA. Water polo is played by teams of seven â a goalkeeper and six âoutfieldâ players â and a match consists of four eight-minute periods in pools which vary in size-from 20m by 10m to 30m by 20m. Minimum water depth must be 1.8m.