Football scouts are addicted to the 40-yard dash, and like all junkies, they sometimes do unwise things. Gil Brandt, former personnel director of the Dallas Cowboys, recalls scouting a receiver from Mississippi Valley State in 1985 named Jerry Rice. The Cowboys, who had the 17th pick mat year, loved Jerry Rice's hands but were concerned about his feet, so they had Rice run the 40 more than 12 times over a three-month period. "We kept thinking this guy played faster and looked faster," Brandt says, sounding wistful, "but he still ran in the 4.6 range. That's why he was drafted 16th. Nobody realized his playing time wasn't his 40 time."
Despite horror stories like that, the 40 remains the gold standard for most NFL scouts. A fast time4.4 seconds for running backs, receivers and cornerbacks, 4.6 for linebackers and 4.8 for defensive ends. A guy who can't run a fast 40 might get a chance to prove himself; a guy who runs a fast 40 will always get a chance, even if he can't play, because, "Speed is the one thing you can't coach." Which is why every NFL coach is pushing a stopwatch button like a racehorse trainer does.