Matt Eberflus has found a way to measure almost anything on a football field.
When his player tackles someone along the sideline, Eberflus watches to see how far he pushes him out of bounds. At the least, the ballcarrier has to tumble across the 6-inch chalk border that surrounds the field and land on the other side.
“From the green through the white,” he told the Sun-Times. “That’s a way we measure intensity.”
In the open field, Eberflus measures the last three yards of the possession. Does the tackler accelerate to the ball-carrier and drive his feet?