Hargreaves has begun working with the first-team defense, both at outside corner and inside in nickel situations, Greg Auman of the Tampa Bay Times reports.
"His confidence skyrocketed since Day 1. Skyrocketed," David said. "All you need, for a rookie, all you need to do is just make some plays, make plays here and there, and your confidence boosts and your game takes over. That's what's been going on. You can tell he's carrying himself different now, has a little swagger to him.
"He's making plays and that's the reason we got him. He's doing what he's supposed to do."
Lovie Smith's tenure in Tampa ended in part because his defenses were talent-deficient and mistake-prone.