For most of the first four seasons of his NFL career, Dallas Cowboys running back Ezekiel Elliott was as good (or better) than any player in the league at his position. Elliott topped 1,300 rushing yards three times, averaged over 95 rushing yards per game an equal number of times and led the league in rushing twice.
In 2020, the former Ohio State star played in 15 games but didn't hit the 1,000-yard mark. He averaged only 65.3 yards per game, almost 20 yards lower than in any other year, and tied a career-high with half a dozen fumbles.