The game begins where first and 5-15 is medium, second and 4-11 is medium, 3rd and 3-9 is medium, and 4th and 2-7 is medium. So, for example, 3rd and long would be 3rd and more than 9 yards to go. But, as the game progresses, if you are averaging more than 5 yards per play, your "short" distance will be lengthened, pushing your "medium"distance to a longer placement, as well as the "long" distance. Conversely, if you are averaging fewer than 5 yards per play it goes in the other direction.