Patriots head coach Bill Belichick is the longest-tenured head coach in the NFL, as he's been on the sidelines in New England since the 2000 season. The team has had tremendous success under his leadership, earning 11 division titles during that time.

Such stability is rare around the NFL, as has already been witnessed since Sunday evening, when the Browns fired head coach Rob Chudzisnki, 11 months after they hired him.

Chudzisnki is one of six head coaches to be fired already this year, joined by Leslie Frazier (Vikings), Mike Shanahan (Redskins), Greg Schiano (Buccaneers), Jim Schwartz (Lions) and Gary Kubiak (Texans).

To further illustrate both Belichick's amazing run and the rampant turnover among head coaches, consider this: since Belichick was hired in 2000, there have 113 different men to serve as head coaches.

That number could balloon in the coming days, as other head coaching changes may take place around the league.

The stability and consistency of Belichick is another element to the team's success that should not be overlooked.