“A lot of teams were telling me they were glad I posted a 4.5. I was like ‘why?’” Gibson said. “They said if anybody thinks you run a 4.5 they’re crazy. We’ll get you.”
For the record, the pro scouts down along the field had Gibson’s time in the high 4.3s, which is what he typically runs, but the official NFL clock began when Gibson’s arm moved, not when he took off. Therefore, his official time at the Combine was 4.5 instead of 4.4 or a high 4.3.
Many top professional prospects now employ speed coaches specifically to train them to run the 40 at the Combine and personal workouts.