How does the NBA draft lottery work?
Process The lottery is normally held during the fourth week of May. The 2007 draft lottery was held on May 22. The Portland Trail Blazers, Seattle SuperSonics, and Atlanta Hawks won the first through third picks, in that order. To determine the winner, fourteen ping pong balls numbered 1-14 are placed in a standard lottery machine and four balls are randomly selected from the lot. Just as in most traditional lotteries, the order in which the numbers are drawn is not important. That is, 1-2-3-4 is considered to be the same as 4-3-2-1. So although there is a total of 24 orders in which the balls numbered 1-2-3-4 can be picked, they are all treated as the same outcome. In doing this, the permutation of 4 balls from 14 becomes the combination of 4 balls from 14. That is, the total of 24,024 (14! / 10!, or 14x13x12x11) possible permutations is reduced by a factor of 24, to 1,001 combinations. Of these, 1 outcome is disregarded and 1,000 outcomes are distributed among the 14 non-playoff NBA
