The Giants Victories
It’s easy to forget that Belichick was already a two-time Super Bowl-winning coach before he joined the Patriots. He was a brilliant defensive coordinator for the New York Giants before he became a head coach. Bill Parcells hired him in 1985 and turned Lawrence Taylor into one of the league’s best players.
Meanwhile, they achieved glory in 1986 and 1990 with two Super Bowl victories. The second saw them win as underdogs against the Bills as Belichick pulled off a defensive masterclass. This remains one of the most famous game plans ever for its innovative use of overloading defensive backs (via Giants).