While the big lottery drawing will occur on May 19th, today tiebreakers were settled. The Mavs (aka Celtics) won their coin flip and will pick 16th instead of 17th. The Celtics weren't as lucky with their own pick as the ping pong balls gave the jHeat pick #21 and the hornets pick #22. The Celtics then came in at #23 with the last of the 4 way tie, the Hawks, picking #24.
So if you're keeping score at home,by beating the Heat in Game 82, the Celtics earned a tougher first round opponent, line-up to face the Cavs in the 2nd round, and move back a couple spots in the draft.