Chris Johnson doesn't believe John Ross broke his 40-yard dash record

Chris Johnson is skeptical that Cincinnati Bengals wide receiver John Ross truly broke his 40-yard dash record.

Johnson's mark of 4.24 seconds stood for nearly a decade before Ross ran a record-breaking 4.22 at the 2017 NFL Scouting Combine. However, during an appearance on "Simms and Lefkoe: The Show," Johnson said he thinks the NFL rigged Ross' time.

"Still to this day, I don't believe he beat it ... When you look at the side by side, I pulled off on him at the end," the former running back said. "And No. 2 is, when have it ever took that long for the official time to come in?

"They probably got tired of no one beating (my record) and felt like the combine was getting boring," Johnson added.

Johnson announced his retirement from the NFL in November after 10 seasons.