<P> Auburn's Bo Jackson claims to have run a 40 - yard dash with a time of 4.12 s . A time of 4.18 run by Jackson within the same week added some support to the legitimacy of the times . Texas Tech's Jakeem Grant was hand - timed by a New Orleans Saints scout as running a 4.10 in 2016, potentially beating Jackson's record . Deion Sanders ran a 4.27 - second 40 - yard dash in 1989 . </P> <P> In 2013, Carlin Isles recorded a time of 4.22 at a Detroit Lions facility during a workout . </P> <P> In 2017 Olympic sprinter Christian Coleman ran a time of 4.12 seconds on turf in response to claims that NFL players are as fast as Usain Bolt . </P> <P> This is a list of the official 40 - yard dash results of 4.30 seconds or better recorded at the NFL Scouting combine since 1999, the first year electronic timing was implemented at the NFL Scouting Combine . </P>

Who has ran the fastest 40 yard dash
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