I have been analyzing running backs at the combine for a while now, and the only thing that I am certain is that there is no perfect way to analyze anyone. Nobody can know the true potential of a player from athletic numbers, tape, or interviews. But there is definitely a correlation physically to the success of some players. And it makes sense.

You can't expect to have a HOF player run for 2,000 yards if they are slow. My formula isn't perfect, and it isn't that different then some other ones, but I think it is important to factor a player's weight and height into their 40-time. A player can run a 4.30 40-yard dash, but if they are 5-10 and 200 pounds it isn't as impressive as the 6'1, 230 pound horse that runs it in 4.42.

Here are the scores from this year. 700 is a good score. 800 is off the charts. And Derrick Henry's 887 score is the highest I've seen in a very long time. It is so high that I will have to look into the formula in the future. His weight/speed/size combo is too heavy for an accurate prediction to his potential.