BOSTON, MA - DECEMBER 28:   Al Horford #42 of the Boston Celtics shoots the ball against the Houston Rockets on December 28, 2017 at the TD Garden in Boston, Massachusetts.  NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2017 NBAE  (Photo by Brian Babineau/NBAE via Getty Images)
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