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Bill Belichick is the greatest head coach in NFL history—there should be no debate.
Belichick is a three-time Super Bowl winning head coach as his New England Patriots won three out of four Super Bowls from 2001-2004, which is now known as an NFL dynasty.
Along with Belichick's three Super Bowl titles, he has been named AP NFL Coach of the Year three times and is apart of the NFL 2000s All-Decade Team.
Entering 2012, Belichick has a 175-97 record while earning a trip to the playoffs in each of the three last seasons and has made the plays in nine out of his 12 seasons with the Patriots.
Throughout Belichick's success in New England, we have seen him discover one of the greatest quarterbacks in NFL history, Tom Brady, as well as resurrect players' careers such as Corey Dillon, Rodney Harrison and Mike Vrabel.
One of the most impressive things that Belichick has done is during this past season, he started 13 undrafted free agents at separate occasions throughout his run to the Super Bowl—how incredible is that? That's just great coaching.
And keep in mind, all of Belichick's work has been done in an era of free agency—which makes his achievements are far more greater than we can imagine.
Bill Belichick is not only a modern-day Vince Lombardi, but he's in a league of his own. He is indeed the greatest head coach in NFL history.