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8. Matt Patricia

NFL head coaching jobs: LionsCareer record: 13-29-1

The bearded wonder helped Bill win three Super Bowls as the Patriots’ defensive coordinator, but he was largely disagreeable in Detroit, guiding some scrappy upsets – including over Belichick’s Pats in 2018 – but ultimately expediting the future relocation of big names like Matthew Stafford and Darius Slay while failing to sniff the playoffs.

5. Eric Mangini

NFL head coaching jobs: Jets, BrownsCareer record: 33-47

A defensive assistant under Belichick with both the Jets and Patriots, Mangini started hot, finishing 10-6 and guiding Chad Pennington to Comeback Player of the Year honors in his debut, only to fall to Belichick’s Pats in the first round of the playoffs. Al Groh

NFL head coaching jobs: JetsCareer record: 9-7

You can’t tarnish a legacy that barely exists! Groh, of course, is best known for his long run as Virginia’s coach, and a champion Giants assistant, but he spent just one year on the sidelines in New York before resigning to return to college.

3. Nick Saban

NFL head coaching jobs: DolphinsCareer record: 15-17

A defensive coordinator under Belichick with the Browns, Saban would obviously rank No. 1 if we were including college achievements; he’s the NCAA Belichick running the powerhouse that is Alabama.

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