The 27-year-old recorded his first interception of the season when he picked off Matt Cassel to set up a touchdown in New England's win over the Minnesota Vikings last week.
Belichick told reporters: "Devin's huge. He's really our most experienced player in terms of on our team in our system. He's played corner, played safety, played some of the other positions too – the nickel, dime positions from time to time, certain matchups.
"He understands our defense well, he gives us a lot of experience back there, continuity, good communication, smart player, really anticipates, has good awareness, good instincts."
The Patriots face the Oakland Raiders in their week-three clash tomorrow.