In any running back drill their 3 key elements that become key: Body Leverage Footwork/Change of Direction Explosion In this drill you will see the running back explode through the arch keeping body at a low level to absorb the blow. He will change direction and simultaneously foot fire simulating [...]
Henry Riggs III blasts a 4.28 40 at Combine. He is among the 3 fastest of all time. He was a star at Alabama but will definetly see his stock go through the roof.
Do these drills 1-2x per week over 6 weeks with variations and you will see huge improvement.