This week's ESPN piece discusses a particular preseason stat -- yards per carry -- which indicates first-year success for lesser-known (third-round or lower, or undrafted) rookie running backs. If you want to be ahead of the pack on the next Ahmad Bradshaw or Pierre Thomas, YPC over the average seems to be a good way to go. At the end of the preseason, I'll post a list of the qualifying rookie backs whose YPC is highest over the average.