In college track he ran a 4.38 in a yo yard dash event. His combine 40 was 4.49
The fastest 10-yard split ever electronically recorded was the 1.40 time recorded by current Tennessee Titan runningback Chris Johnson at the 2008 NFL Scouting Combine.
Jerry rice ran a disappointing 4.7 in the 40 yard dash at the NFL combine but still went on to have one of the most successful careers of any wide receiver.
4.49
If you stay in shape, your 40 yard dash time at age 40 should be just fractionally less than in your prime. I ran a 4.85 when I 23. When I was in better shape, 2 years ago at age 37, I ran a 5.05.
4.28 official time at NFL combine.
He ran a 40 yard dash in the 4.5s
4.7
4.24
He ran a 4.39 in the 40-yard dash at the 2006 NFL Scouting Combine.
His time at the combine prior to his rookie season was a 4.64 seconds 40 yard dash.
9.9
9.9
He ran a 4.38 at the Combine.
4.28
In college track he ran a 4.38 in a yo yard dash event. His combine 40 was 4.49
Percy Harvin ran the 40-yard dash at the NFL combine in 4.41 seconds.