5
A 4 seed.
2011 NCAA Final Four, #8 seed Butler, facing #11 seed Virginia Commonwealth. 1985 NCAA Final Four, #8 seed Villanova, defeated #1 Georgetown to win the National Championship. 1980 NCAA Final Four, #8 seed UCLA, lost to #2 Louisville in the National Championship game.
16th
UNLV was a #1 seed when they won the NCAA Men's Basketball Championship in 1990.
The answer to your question is yes. George Mason (2006) and LSU (1986) both beat #1 seeds as #11 seeds. In 2011, Virginia Commonwealth (VCU) beat #1 Kansas to become the third #11-seed (LSU and George Mason being the first two) to advance to the Final Four.
Marquette was the #16 seed in the NCAA Men's basketball tournament in 1977. They advanced and won the championship. They were also the only team to ever beat all 4 #1 seeds during the ncaa tournament.
Since the NCAA implemented the 64 seed tournament format in 1985, the lowest seed to make it to the NCAA championship game was #8 seeded Villanova in 1985.
Since seeding was added as a component of the NCAA men's basketball tournament in 1979, the lowest-seeded team to win the championship was Villanova, whichwas a #8 seed in 1985.
the (4) seed Arizona Wildcats in 1997, Defeated (1) seed Kansas Jayhawks (favored to win it all) in the sweet sixteen: final score 85-82 Defeated (1) seed North Carolina Tar Heels in the final four: final score 66-58 Defeated (1) seed Kentucky Wildcats in the National Championship: final score 84-79
In 1985 Villanova won a national championship as an 8 seed beating Georgetown the highest seed ever to win a national championship
From 1979 (when seeds were first used) through 2013, the NCAA men's basketball tournament Final Fours that have had at least one #1 seed is 91.4%. Only three times has the Final Four notincluded at least one #1 seed: 1980, 2006 and 2011. The titles in those years were won by a #2 seed, #3 seed and #3 seed respectively.For the record, there has been only one year when all four #1 seeds made it to the Final Four. This was in 2008.