Published: Sep 09, 2010 9:50 PM EDT
Updated: Sep 10, 2010 4:30 AM EDT

DAVIE, Fla. (AP) — The man who knows the Miami Dolphins' defense best says he's unsure what he'll see in the season opener.

Under new defensive coordinator Mike Nolan, the Dolphins will unveil a revamped lineup and more aggressive scheme Sunday at Buffalo. Miami may have new starters at nine positions, with end Kendall Langford and strong safety Yeremiah Bell the only certain holdovers from last year.

All the changes have Nolan wondering how good his unit will be.

Miami's defense regressed last year, collapsing in the final three games, which prompted the shakeup. Defensive coordinator Paul Pasqualoni was replaced by Nolan, who has been a coordinator for five other NFL teams, including Denver last year.