When you play, you are allowed to touch the inside of the shot put circle's rim or stop board during an attempt, but you can't touch the top of either the rim or stop board. The shot putter can't touch the ground outside the throwing circle during an attempt, nor can you leave the circle until the shot hits the ground. The shot must touch or be close to your neck or chin as the attempt begins. The shot is put, not thrown, because it must not drop below its starting position during the attempt, so the shot putter can't wind up like a baseball pitcher or even a football quarterback. Lastly, the shot is put with ONE hand only.