BREAKING: Celtics trade Marcus Smart to Grizzlies, receive Porzingis in 3-team trade | SC with SVP

SportsCenter's Scott Van Pelt details breaking news that the Boston Celtics have completed a 3-team trade with the Washington Wizards and the Memphis Grizzlies, sending Marcus Smart to Memphis in return for Wizards' All-Star Kristaps Porzingis in an opt-in trade minutes before his player option deadline

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