UConn has played 20 times in the NCAA Tournament as the worst seed in the game and is 10-10. That is the 3rd best winning percentage of all teams with 20 or more opportunities. Here is the list of the 10 wins:
Wins against higher seeded teams:
Year Seed Opponent/Seed Round
2016 9 Colorado/8 64
2014 7 Villanova/2 32
2014 7 Iowa St/3 16
2014 7 Michigan St/4 8
2014 7 Florida/1 4
2011 3 San Diego St/2 16
2004 2 Duke/1 4
2003 5 Stanford/4 32
1992 9 Nebraska/8 64
1991 11 LSU/6 64
Wins against higher seeded teams:
Year Seed Opponent/Seed Round
2016 9 Colorado/8 64
2014 7 Villanova/2 32
2014 7 Iowa St/3 16
2014 7 Michigan St/4 8
2014 7 Florida/1 4
2011 3 San Diego St/2 16
2004 2 Duke/1 4
2003 5 Stanford/4 32
1992 9 Nebraska/8 64
1991 11 LSU/6 64