do you, or anyone, know off hand how many drafts the worst team actually ended up with the 1st pick? it seems like even tho the odds are much higher for the worst team, they rarely seem to get that first pick.
The odds are not actually in their favor. The team with the worst record only has 25% of the balls. Only a one in four shot at winning. That means there is a 75% chance another team wins.
To more specifically answer your question:
1988 Clippers worst - Manning
1990 Nets worst - Coleman
2003 Cavs tied for worst - Lebron
2004 Magic worst - Dwight
That's it. Second worst has more wins:
1992 Magic 2nd worst - O'Neal
1994 Bucks 2nd worst - Big Dog
1996 76ers 2nd worst - Iverson
2009 Clippers 2nd worst - Griffin
2011 Cavs 2nd worst - Irving
The "best" team to win with a pick that wasn't trade related was the 11th worst Magic in 1993 (Webber), followed by the 9th worst Bulls in 2008 (Rose).
The best team overall was the 76ers in 1986 (20th worst - Daugherty).