Shot put is played by at least 2 competitors that throw a heavy iron or brass ball; trying to beat the other in the distance that that ball is thrown.
The Olympic Shot Put for men and women are different in size and weight but the rules of the game are the same.
The men’s shot is a 7.26-kilogram ball of iron or brass. The diameter is between 110-130 millimeters. The women’s shot weighs 4 kilograms with a diameter of 95-110 millimeters.
Olympic Rules – http://trackandfield.about.com/od/shotput/a/shotputrules.htm
Photo – edition.cnn.com