 Part of a sign-and-trade with the Hornets who receive forward Josh Green from Dallas. Boston Celtics sign star Jason Tatum to a five-year contract and the largest deal in NBA history at $314 million. Still at $126 million left over to give to Derek White on a four-year deal. Sixers retain all-star Tyrese Maxey on a five-year max extension. Charlotte Knights win at Jacksonville 6-2. Jim Zoki, WBT Sports.