When quarterback Dak Prescott suffered a significant, season-ending ankle injury in the fifth week of the 2020 NFL season, his Dallas Cowboys had won just a single game all season despite the fact Prescott led the NFL in passing yardage by a wide margin.
The 27-year-old two-time Pro Bowler was playing relatively well, but Dallas was not. That's because the Cowboys weren't—and still aren't—a particularly good football team.
The once-dominant offensive line has faded, star running back Ezekiel Elliott appears to have peaked between 2016 and 2018, and the defense has plummeted down the rankings when it comes to DVOA (defense-adjusted value over average at Football Outsiders) in back-to-back seasons.