NFL Sports editorial source review ·
Lamar Jackson: 40 yard time and speed evidence
The reviewed sources do not provide a verified timed sprint. No numerical result or speed rank appears here.
Where the time comes from
The 2018 table has no sprint result. NFL reporting also says the quarterback did not run for scouts during the predraft process. The often repeated 4.34 claim refers to an earlier run he described, not a recorded scouting event.
Speed is only one part of movement
A straight sprint measures elapsed time over a fixed distance. It does not measure top speed during a game, running with the ball or the ability to change direction. A start, surface or timing method can affect a comparison between events.
Baltimore chose the Louisville passer at the end of the first round. The lack of a timed workout does not mean he lacked speed. It means this record cannot support a measured draft sprint or a numerical speed ranking.
How to compare the record
Compare the same distance, event type and timing method. A campus report and an electronic event result may use different setups. The reviewed sources here do not provide verified split times or a complete position ranking. Converting this mark into miles per hour would hide how acceleration changes during the run.
What to check for this record
A video of a long rushing play cannot supply the missing draft time. Game movement includes a start, pads, defenders and changes of direction. The earlier 4.34 story and a scouting event would need separate labels even if both claims appeared in the same player biography.
Questions readers ask
What do the timing units mean?
Each listed sprint value is elapsed time in seconds over 40 yards. It is not a top speed reading, an agility drill time or a verified split for part of the run.
Does a blank result mean a slow run?
No. A blank means the reviewed source has no recorded time. It cannot establish a failed attempt, a slow run or the reason for a missing result.
Sources and review method
We checked the linked records for this update. Team and school reports can explain the event. Historical tables compile results and may leave fields empty. We keep that distinction visible and do not claim an affiliation with the source publishers.