NBA Power Rankings: Be afraid of the Heat. Be very afraid.

The San Antonio Spurs remain the class of the NBA, but watch out for the Miami Heat, writes CBCSports.ca's Lance Winn. LeBron has the team playing inspired basketball at both ends of the court. Find out moe in his weekly edition of the NBA Power Rankings.

Each week, CBCSports.ca's Lance Winn breaks down the balance of power in the National Basketball Association.