Kristaps Porzingis could be sidelined until December

Boston Celtics center Kristaps Porzingis, center, raises his arm as he celebrates with teammates near the Larry O’Brien Championship Trophy after the Celtics won the NBA championship with a Game 5 victory over the Dallas Mavericks. (AP Photo/Charles Krupa) BOSTON  — Boston Celtics center Kristaps Porzingis will miss 5-6 months in the NBA after left…

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