So let's define "great speed"
Before we start tossing numbers around, I feel compelled to qualify them somewhat.

For starters, obtaining "reliable" 40 times for NFL veterans ain't always easy. While there's not an NFL team out there that doesn't make a point of knowing a players' speed at any given time, it's not unusual for both the team and the individual in question to continue using a 40 time posted at the rookie combine or during a pre-draft workout as that players' "official" speed throughout his entire career.

The NFL scouting combine has been using electronic timing since 1990, but that’s one year after Deion Sanders set the standard against which all others are measured by running a 4.29 -- a standard that held up until February of this year when Donte’ Stallworth ran an “official� 4.26.

For the record, nobody else comes even close to those times -- at least not “officially.�