If I were to have visited ESPN.com for the first time in my life today, I would have sworn it was the NBA offseason. As hard as it may be to believe, LeBron James is not testing the free agent market yet, and there are more playoff games to be played.While all the attention has been on James and where he will play next year, the Orlando Magic have become a team of quiet assassins by going 8-0 in an unblemished postseason.A year after being ousted by this very Magic team on their home court, the Boston Celtics have seemingly rediscovered the swagger that earned them a championship two years ago.Here are my three keys for the Celtics if they want to have a chance to raise their 18th championship banner:3) Making Dwight Howard GuardOrlando has looked just about as flawless as their record...

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