I've actually heard of this approach before. I wonder if they took every high school sprint track star, and evaluated those without football scholarships, how'd we would improve.
This website should be of interest.
http://www.athletic.net/trackandfield/
For example, the fastest trackster from last year in Nevada, running a 10.39, committed to Arizona.
http://rivals.yahoo.com/arizona/foot...-Wharton-88585