
Legendary head coach Marv Levy is justifiably in the Pro Football Hall of Fame, and one primary reason is that, from 1990 through 1993, he led the Buffalo Bills to four straight Super Bowls. No other coach has ever done that.
The problem, of course, is that the Bills lost all four of those Super Bowls. The Bills capped off the old millennium with a handful of wild-card and divisional round losses under Levy and then Wade Philips, and then entered a postseason drought that started in 2000. and lasted until 2017.