NBA Draft Lottery: #1 Pick History
Since the modern lottery format was started in 1994, the team with the worst record has only received the #1 pick twice. (However, the team with the best odds of getting #1 has won it 3 times due to an expansion quirk in 1996.) The past four seasons have seen a rush of mediocre, but not awful, teams winning the #1 pick. Chicago last year defied the odds with just a 1.7% chance.
However, it seems like we're due for one of the worst 3 teams to snag the top spot (which will almost certainly go to Blake Griffin). Considering the worst team has a 25% chance of the #1 pick, and this is the 16th year, it would only make sense that this is the 4th time that the #1 team gets the top spot.
Oddly, no team with the 4th worst record has ever snagged the top spot, although the 5th worst teams have done so 3 times.
*The expansion Grizzlies were barred from the 1st pick in 97 & 98, despite having the worst overall record.