14. bill belichick
The Patriots defense was dominant in 2019 with just 14.1 points per game surrendered, the best in the league. New England even jumped out to a 10-1 record. However, that 28-22 loss to the Texans started to unravel the Patriots, who dropped a home game to the Kansas City Chiefs the next week. The morning star to trouble with New England came in the form of a 27-24 loss to the Miami Dolphins at home with a first-round bye on the line. That setup the Patriots to be ripe for the picking as the Tennessee Titans upset them 20-13.
Fun fact: Bill O’Brien is the most successful Bill Belichick assistant with a 2-3 playoff record and four division titles.