4.6, he ran a 4.45 later in his career though, pretty fast considering he's 6'4" and white lol
4.45
4.3
it was in 4.96 at the NFL combine.
He ran 4.38 at the '03 draft combine
4.28 in the nfl combine in 2008
Champ Bailey from Georgia ran a 4.28 second 40 yard dash in the NFL combine of 1999
At the combine prior to his rookie season, he ran a 4.64 second 40 yard dash.
Mike Alstott ran a 4.66 40-yard dash in his college combine in 1996.
Percy Harvin ran the 40-yard dash at the NFL combine in 4.41 seconds.
According to nfldraftscout.com he ran a 4.57 at the combine.
Jason Witten has run a 4.67 in the 40- yard dash.
He measured in at 6'4 he ran a 4.21 40 yard dash in the 1998 Indianapolis Combine. In 2007 it was rumored he ran a 4.24 at the age of 30.