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The Boston Globe

Sports

On basketball

Celtics can beat Knicks, but it won’t be easy

NEW YORK — Ever since Rajon Rondo blew out his right knee, Jared Sullinger’s creaky back required surgery, and players such as Jason Terry and Courtney Lee failed to meet expectations, the margin for error for the Celtics in this postseason is razor thin, hardly any room for mistakes.

During the recent Big Three era, the Celtics strolled into the postseason realizing they could win their first-round series on pure talent, with better execution required in later rounds. But they did have an opening series to sharpen their proficiency.

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