The NFL has a long tradition of great rivalries that are often intense, bitter and emotional affairs. It has also become the norm for divisional and in-state rivals to develop bad blood between the opposing players and fan bases. The best NFL rivalries are not limited to just the franchises. A rivalry pitting two of the league’s marquee quarterbacks or a pair of the game’s most successful head coaches add even more intrigue to a highly anticipated matchup.Buckle your chinstrap and hold on as we take a look at some of the most heated rivalries in the history of the NFL. John Madden vs. Chuck Noll Another pair of Hall of Fame coaches, John Madden retired with a slim 6-5 advantage over Chuck Noll in 11 career meetings. Although he retired after just 10 seasons and finished with winning records against Bud Grant, Don Shula and Tom Landry, Madden was just 1-3 in four AFC title matchups with Noll on the opposite sideline.The legendary duo and their teams were involved in one of the NFL’s most memorable plays.