To understand the depths of animosity between the Miami Heat and Boston Celtics entering this year's NBA Eastern Conference finals, you have to go back to an otherwise nondescript regular-season night in March 2013.
That night in New Orleans, a Heat public relations official approached the team's traveling media contingent with a message from team president Pat Riley that would immediately go into the annals of history.
"Danny Ainge needs to shut the f--- up and manage his own team," Riley said, via that hand-delivered statement. "He was the biggest whiner going when he was playing and I know that because I coached against him.