Celtics finish off deal to send Grant Williams to Mavericks and officially sign Kristaps Porzingis - The Boston Globe
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Tatum's rare triple-double leads Celtics past Mavs, 124-95 - The San Diego Union-Tribune
Celtics' Rocky Past With Grant Williams Won't Harm RFA
Mavericks land Grant Williams in 3-team sign-and-trade deal
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Celtics Rumors: RFA Grant Williams Linked To Western Conf. Team (+ Top 3 Landing Spots) - NBA Trade Rumors