chris Johnson by far.
I got to say willie Parker is the fastest player in the nfl.Also mentenhall is the slowest runningback in the nfl
Bo Jackson had a hand timed 40 yard dash time of 4.12 second in 1986.
Walter payton and barry sanders
5'11'' is the average size.
Walter "sweetness" Payton
Adrian Peterson or Chris Johnson
Kindly refer to the link attached below.