For the first time in 25 years, the Patriots will have a new-look defense. Here's what to expect out of Terrell Williams and Mike Vrabel's unit.

Here are four things to know about new Patriots defensive coordinator Terrell Williams. Read more on Boston.com.

Williams reunites with coach Mike Vrabel in New England after working on Vrabel's staff for six years with the Titans.

Mike Vrabel said he's excited to work with his new offensive and defensive coordinators, in his first interview since hiring Josh McDaniels and Terrell Williams.

After the Patriots let go of Belichick and Pellegrino, Vrabel has worked quickly to bring in multiple defensive coaches. Booker coached safeties in Tennessee. The Patriots also added Kevin Richardson II, who was an assistant defensive backs coach at the University of Illinois.

Mike Vrabel landed the "best" in the league, Detroit Lions D-line coach Terrell Williams, as New England Patriots defensive coordinator.

Detroit Lions defensive line coach Terrell Williams is leaving his position with the franchise to become New England's new defensive coordinator under Vrabel, according to a report from ESPN's Adam Schefter.

Two HBCU coaches have been hired to the Patriots: former North Carolina A&T coach Terrell Williams and Florida A&M coach Milton Patterson

New England Patriots head coach Mike Vrabel has been on the job for a week and is ramping up his efforts to build out his coaching staff in Foxboro.

New England Patriots head coach Mike Vrabel has made his second big hire, snagging another former Detroit Lions coach for his defensive coordinator.