George Mason University
They were an 11 seed.
11
The 2006 final four teams were Florida, George Mason, UCLA, and LSU. Florida wound up defeating UCLA in the national championship game to become 2006 NCAA champions.
The worst seeded teams ever to make it to the NCAA Final Four were both George Mason University in 2006 and Virginia Commonwealth University in 2011. They were both 11 seeds entering the tournament.
Villanova University, University of North Carolina, University of Connecticut, Michigan State University
Virginia Commonwealth University
11 seed George Mason
George Mason 2006 LSU 1986
The lowest seeded team to make it all the way to the Final Four in the NCAA basketball tournament was an 11 seed and it happened four times:11 seeded LSU in 198611 seeded George Mason in 200611 seeded VCU in 201111 seeded Wichita State in 2013
Nope. Zilch, Nada
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.