Grant Williams and Javonte Green are starting to put together a collection of Boston Celtics autographs.
After getting Marcus Smart to sign their NBC Sports Boston "Authentic Fan" posters two weeks ago, the two C's rookies bugged Jayson Tatum to do the same before Friday night's Celtics-Pistons game. After they let Tatum finish his food, of course. . .
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Something tells us Williams and Green are going to make this a trend. So the question is, who will sign for them next on Authentic Fan Friday?