The afterglow from the biggest comeback in Super Bowl history faded quickly for New England.
After storming back from a 28-3 third-quarter deficit to defeat Atlanta 34-28, the Patriots made some roster tweaks. Their two biggest moves were signing former Bills cornerback Stephon Gilmore to a five-year, $65 million contract, and trading a first-round draft pick to the Saints for receiver Brandin Cooks.
In the Thursday night season opener, Kansas City clobbered the Patriots 42-27, as Alex Smith passed for 368 yards and four touchdowns. Drew Brees carved up New England for 447 yards a week later. Then DeShaun Watson and Cam Newton joined the fun.
Cooks had a strong start, helping stretch the offense for Tom Brady. But Gilmore and the defense struggled. Four weeks in, the Patriots ranked dead last in the NFL in total defense and second-worst in points allowed.
"I was telling [Gilmore] to ignore the media," veteran Patriots safety Devin McCourty said. "You're a new guy, you signed a huge free agency deal. We go 2-2, we're giving up [32.0] points per game, what's new? He's new. Well, it's his fault.'
"I wanted him to know that wasn't the case in the locker room. Us as a whole, we had a lot of work to do."
After Week 4, New England turned things around, leading the NFL in scoring defense (14.0 points per game), with the Vikings second at 14.7, from that point on.
This was nothing new for coach Bill Belichick. His best teams always seem to improve defensively as the season progresses. This turnaround happened even with injuries forcing the Patriots to use a patchwork line.