How can football field be 100 yards long when there are presumably 32" between each 4" yard marker. It does not add up when you measure from fifty-yard line (or any other). From the 1 yard line, there is 32" plus 4". By same rule, that would mean 50 yards from far side of line. But that is true if ball was advancing in other direction, too, meaning field is 4" short.