5. Boston Celtics

2010-11 Record: 56-26 (Lost in Eastern Conference Semis to Miami 4-1)
Key Returning Players: Paul Pierce, Kevin Garnett, Ray Allen, Rajon Rondo
Key Additions: Brandon Bass, JuJuan Johnson (R)
Key Losses: Glen Davis, Delonte West
This Week: @ New York, Sunday (12/25); @ Miami, Tuesday (12/27); @ New Orleans, Wednesday (12/28), vs. Detroit, Friday (12/30)

The Celtics have been taking a beating by fans and analysts alike since they ran out of gas vs. Miami during the playoffs last year. The Perkins trade still haunts them with Jeff Green going down with heart problems; who knows if he'll be able to return as the same player? This is looking like the last chance for the Big 4 to make a run at the title with the rise of younger squads like the Bulls, Heat and Knicks. Let's not count the grizzled vets out yet, though. They're fully capable of doing what the Spurs did last year and can go deep in the playoffs IF healthy. —Angel Diaz