I calculated the "Speed Score" for this yrs WRs.
Speed Score is Football Outsiders' metric for evaluating running back prospects. It's built on the simple idea that, because smaller backs tend to run faster than larger backs, we should be more impressed by a 4.5-second 40-yard dash from a 220-pound back than the same clock reading from a 170-pound back. As such, Speed Score incorporates a back's official time in the 40-yard dash with his weight to produce a measure of his speed given his size using the formula, (Weight * 200)/(40 time^4). As a guide, we consider a 100 Speed Score 100 as average, with anything below 80 serving as a giant red flag, and anything above 120 serving as a giant neon sign.
Kniles Davis had the best in last yrs draft, and I think that Dorsey relies heavily on metrics when drafting. His 2013 draft picks were all workout/combine warriors.
Evans M. 109.7
Evans Q. 103
current chiefs based on combine: