Pitchers form a circle changeup with their thumb and index finger where the leading pressure is placed on the first two seam stitching. The three other fingers fan out across the top of the ball. The ideal placement of the pinky is against the other two seam piece of the ball. The ball should not have any contact with the palm.
The circle change should be completely thrown like a fastball, but at the last second pitchers rotate their hand with the thumb going down. This cuts the ball against the air and allows it to reduce more speed and tail away from the pitching hand. If a pitcher is right handed, the circle change will ride into the fists of a right handed batter. The circle change works extremely well off the four-seam fastball and slider, which run in the opposite direction.