Arizona Cardinals head coach Bruce Arians speaks a lot about wanting speed on the field. He isn't the only coach, but when it comes to wide receivers, he is rather picky. If we take him at his word, there is a specific speed benchmark a guy has to have to even be considered.
A while back, he spoke about this year's wide receiver class and you could tell he wasn't pleased with it. He said it was the slowest he had seen in 20 years.
When the NFL Draft came and went, it was the first in many years the team did not draft a receiver.
When asked if the team considered taking a flier on one of the receivers in the late rounds, general manager Steve Keim said, "I tired, but none of them ran a 4.2."
Arians added, "there wasn't a guy there that ran better than 4.5."
So we have a bit of a rule. If you are a guy the Cardinals will take a chance on, you have to run under 4.5.