And beauty is in the eye of the beholder.
"He has had a lot of good coaching jobs," Patriots owner Robert Kraft said. "He's a fantastic coach and we're privileged to have him."
Previously, many believed Belichick's finest hour came in 2001.
Coming off a 5-11 season, Sports Illustrated picked the Patriots to finish last in the AFC East. In the second game of the year, quarterback Drew Bledsoe was injured, forcing the team to go with a second-year replacement who was a sixth-round draft pick.
The Patriots started out 1-3, but eventually that kid, Tom Brady, did OK. The Patriots finished 11-5 and advanced in the playoffs with a little help from the tuck rule. Belichick subsequently won his first Super Bowl as a head coach.
This year, Belichick has had to coach around having the 31st-ranked defense in the NFL.
"He has done an unbelievable job, particularly with the defense, getting them to play at a higher level, really developing the scheme based on the available talent," Patriots assistant head coach Dante Scarnecchia said.
These Patriots have come a long way from those of 2001. Belichick has won with a completely different philosophy.
"He has adapted his defensive mentality to what wins championships now, which is offensive football," Fox analyst and former Ravens Super Bowl-winning coach Brian Billick said. "He has been brilliant."
Belichick has been at the forefront of the two tight-end revolution. He has taken a wide receiver in Julian Edelman and put him on defense. He has taken a scrap-pile cornerback in Sterling Moore and made him a starter.
"He has made some bold decisions roster-wise," Kraft said. "Some of the people who have been cut … some of the people who were brought in … Bill is a savant in understanding personnel and product, understanding chemistry, balancing core veterans with youth."
Comprehend the trend: Revolving defense
If you want to know why the Patriots gave up the second most passing yards in NFL history this season, take a look at their list of transactions and roster composition.
Through the course of the season, the Patriots cut five players who they once regarded highly — safety Brandon Meriweather, safety James Butler, cornerback Leigh Bodden, cornerback Darius Butler and defensive tackle Albert Haynesworth.
The Patriots have started 11 players on defense who were not drafted.
On their current roster, they have 11 defensive players who have been cut before.
They have had 40 players take snaps, including 16 defensive backs. At least two undrafted free agents are expected to start in the secondary against the Giants.
