Celtics' bold move for Stevens promises success where others failed

New Celtics coach Brad Stevens took Butler to a pair of title games while running an NBA-styled offense.

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Now, in what could have been a moment of uncertainty and weakness, Ainge is making a long-term investment in those values. He and Stevens are married to each other, they need each other, and that alone is reason to believe that together they may eventually be able to do something unprecedented in the NBA -- contend for the championship with a college coach. In this case, Stevens will be learning from the unique point of view of the NBA's winningest franchise. There has never been a story in the modern day league quite like this one.