Texas
illinois
Villanova was an eighth seed in 1985.
A lot of them. There are 336 division 1 teams.
Kansas
NC State
Texas
The worst record would be winning no games at all, unfortunately this tends to happen to some teams.
Toledo state 18-16 in 1964
Florida St. was selected as an at-large with a 6-10 conference record in 1998.
duke
Marquette won the NCAA Men's Basketball Championship in 1977.
The UNLV Men's Basketball team won the national title in the 1989-90 season. They finished the season with a 35-5 record, including a 16-2 conference record.
PAC 10
1985
1 seed
depaul