Duke has watched opponents blow by them off the dribble or lose them on screens with regularity.

"We didn't really trust each other," junior forward Ryan Kelly said. "To have a good defense, you have to be able to trust each other, know each other, have each other's back."

Without trust, players said, mistakes happen.

"Sometimes you don't trust guys behind you, so you don't pressure the ball as much and you get beat," junior guard Seth Curry said. "Guys don't take charges or you're just not guarding your man."