NFL Sports editorial source review ·
Christian McCaffrey: 40 yard time and speed evidence
The reviewed record lists 4.48 seconds. Source setting: compiled combine record. Read the event notes before comparing that mark with another workout.
Where the time comes from
The Stanford running back has a full set of running, jumping and lifting marks in the 2017 table. His 6.57 second cone drill measures a different movement pattern from his 4.48 second straight sprint.
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.
Carolina used the eighth selection on the running back. Read his 121 inch broad jump alongside his 37.5 inch vertical: one measures horizontal distance and the other upward reach. Neither test counts receiving production or pass protection snaps.
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
His 10 lifting repetitions and 6.57 second cone drill describe different tasks. Comparing the lifting count with a much heavier position group would hide the role and body size involved. The table records a workout; it does not turn one low or high mark into an overall player grade.
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.