Eric Anthony Mangini (born January 19, 1971) is an American former professional football coach and current television sports analyst.

Mangini played nose tackle at Division III Wesleyan University and holds the school's single-season (11.5) and career (36.5) sacks records.

[3] During the second semester of his junior and senior years, he coached the Kew Colts in 1991–92, a semi-professional football team in Melbourne, Australia, to two regional championships.

[4] Mangini joined the Chi Psi fraternity that coaching mentor Bill Belichick, another Wesleyan alumnus, was part of two decades earlier.

His work ethic impressed Belichick, and the head coach was instrumental in promoting Mangini to a public relations intern, and later, an offensive assistant.

Mangini, who won three Super Bowls with the Patriots, turned down defensive coordinator positions with the Miami Dolphins, Oakland Raiders and Cleveland Browns before accepting the role with New England in 2005.

[10] In his first season, Mangini led the Jets to a 10–6 record and a postseason berth with NFL Comeback Player of the Year quarterback Chad Pennington.

Early in the regular season, Mangini complained to league officials that Belichick's Patriots illegally filmed the Jets' defensive signals, exposing the "Spygate" scandal.

[14] After starting his first season in Cleveland 1–11, the team bounced back with a win over their division rival and defending Super Bowl champion Pittsburgh Steelers.