BOSTON —

The Boston Celtics have signed head coach Joe Mazzulla to a multi-year contract extension, the franchise announced on Friday.

Team officials did not share terms of the deal, citing team policy.

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Mazzulla, 37, has been head coach for three seasons after serving as assistant coach with Boston for the three previous seasons.

During his tenure, the Celtics have gone 182-64 with 33 playoff wins. His team won an NBA championship in his second season.

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