The Denver Broncos started out 1-2 on the season, and things seemed to be shaky at best. However, the Broncos ended up winning the next 11 games and truly put the NFL on notice, but during this massive winning streak, it honestly felt like the doubt grew.
People didn't necessarily like that the Broncos were winning a ton of one-score games, but that is simply the way to sustain success in this league - winning close and performing when the stakes are at the highest is what makes Super Bowl champions. Denver blew out a ton of teams last year, and while it was fun to witness, that isn't a sustainable method of winning in the NFL.