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Saturday, the NBA world was saddened by some tough news out of Washington, as the sister of Celtics All-Star Isaiah Thomas had died following a car accident. 

But despite dealing with that unimaginable grief, Thomas is planning to play in Game 1 of the Celtics' first-round series against the Bulls

Before the game, Celtics head coach Brad Stevens expressed his support for Thomas.

This was the emotional scene before tip-off: