It isn't rocket science, you get your players to play hard and play smart defensively, Mike Brown has turned this team into a very formidable defensive team. Case in point, just look at how they smothered Chauncey Billups, who if I am not mistaken had the best assist-to-turnover ratio of any PG in the league this season until he ran into the Cavs, where he had way more turnovers than assists. Cleveland has played championship-caliber defense last postseason and this year, last season they didn't have the scorers to compliment Lebron with however that has changed quickly and they haven't lost a beat on the defensive end.