TV sitcom ‘Extended Family’ taken from real-life relationship of Celtics owner, wife and her ex

Read MoreThe new NBC sitcom “Extended Family” is loosely based on the real-life family dynamics between Boston Celtics owner Wyc Grousbeck, his wife and her ex-husbandThe new NBC sitcom “Extended Family” is loosely based on the real-life family dynamics between Boston Celtics owner Wyc Grousbeck, his wife and her ex-husband