TJ, call me when you find a player in the world that can precisely hit the ball 1000 times in a net with a variance that is half the diameter of the soccer ball or less when put in ideal conditions.
Or a golf player that can hit a, I don't know, target with a diameter of 1m from a distance of about 200 yards.
In either case, you will get what will appear to be a gaussian distribution of the position around the intended target. Does that mean the player ****ed up on all shots that were not on the target? Nope. The player likely ****ed up for the shots that were at least 1 (maybe even 2) standard deviations from the intended mean, but that's about 70/95% of the shots a player doesn't screw drastically.
Even a machine will not achieve perfect accuracy for those sports.
The variance that is created is undoubtly created by uncontrollable factors, which I've stated many times. The accumulation of all those can have a noticeable impact.
Even the most trained athlete will not have 100% perfect motion control for kicking a ball, swinging a club, etc. And as I said, unperfect motion is not the only factor.