There was an interesting conversation in the previous thread about how many upsets to expect in this NCAA Tournament compared to previous years, and I believe
@Second place is 1st loser said something I agree with - that the first few rounds will be exceptionally wacky, but we will see a pretty chalky Elite Eight and beyond.
Anyway, it made me want to look at how many notable early upsets there were in previous years and see if there was a trend. Rather than look at individual upsets, I wanted to look at top 3 seeds that did not make it out of the First Weekend (i.e., First Round and Second Round). I could have cut it off at top 4 seeds, as they are all technically "protected" and theoretically expected to make the Sweet Sixteen. However, I think the #4 vs. #5 Second Round matchup is essentially a pick 'em in a way that #1 vs. #8/9, #2 vs. #7/10 and #3 vs. #6/11 just simply aren't.
List of Top 3 Seeds Losing in the First Weekend
2000
#1 Stanford in Second Round
#1 Arizona in Second Round
#2 Temple in Second Round
#2 Cincinnati in Second Round
#2 St. John's (NY) in Second Round
#3 Ohio State in Second Round
#3 Oklahoma in Second Round
#3 Maryland in Second Round
2001
#2 Iowa State in First Round
#2 North Carolina in Second Round
#3 Boston College in Second Round
#3 Florida in Second Round
2002
#1 Cincinnati in Second Round
#2 Alabama in Second Round
#3 Georgia in Second Round
#3 Mississippi State in Second Round
2003
#2 Wake Forest in Second Round
#2 Florida in Second Round
#3 Xavier in Second Round
2004
#1 Kentucky in Second Round
#1 Stanford in Second Round
#2 Gonzaga in Second Round
#2 Mississippi State in Second Round
#3 NC State in Second Round
2005
#3 Kansas in First Round
#2 Wake Forest in Second Round
#2 UConn in Second Round
#3 Gonzaga in Second Round
#3 Oklahoma in Second Round
2006
#3 Iowa in First Round
#2 Ohio State in Second Round
#2 Tennessee in Second Round
#3 North Carolina in Second Round
2007
#2 Wisconsin in Second Round
#3 Washington State in Second Round
2008
#2 Georgetown in Second Round
#2 Duke in Second Round
2009
N/A
2010
#3 Georgetown in First Round
#1 Kansas in Second Round
#2 Villanova in Second Round
#3 Pitt in Second Round
#3 New Mexico in Second Round
2011
#1 Pitt in Second Round
#2 Notre Dame in Second Round
#3 Syracuse in Second Round
#3 Purdue in Second Round
2012
#2 Duke in First Round
#2 Missouri in First Round
#3 Florida State in Second Round
#3 Georgetown in Second Round
2013
#2 Georgetown in First Round
#3 New Mexico in First Round
#1 Gonzaga in Second Round
2014
#1 Wichita State in First Round
#3 Duke in First Round
#2 Kansas in Second Round
#2 Villanova in Second Round
#3 Syracuse in Second Round
#3 Creighton in Second Round
2015
#3 Baylor in First Round
#3 Iowa State in First Round
#1 Villanova in Second Round
#2 Kansas in Second Round
#2 Virginia in Second Round
2016
#2 Michigan State in First Round
#3 West Virginia in First Round
#2 Xavier in Second Round
#3 Utah in Second Round
2017
#1 Villanova in Second Round
#2 Duke in Second Round
#2 Louisville in Second Round
#3 Florida State in Second Round
2018
#1 Virginia in First Round
#1 Xavier in Second Round
#2 North Carolina in Second Round
#2 Cincinnati in Second Round
#3 Michigan State in Second Round
#3 Tennessee in Second Round
2019
N/A
2021
#2 Ohio State in First Round
#3 Texas in First Round
#1 Illinois in Second Round
#2 Iowa in Second Round
#3 Kansas in Second Round
#3 West Virginia in Second Round
2022
#2 Kentucky in First Round
#1 Baylor in Second Round
#2 Auburn in Second Round
#3 Wisconsin in Second Round
#3 Tennessee in Second Round
2023
#1 Purdue in First Round
#2 Arizona in First Round
#1 Kansas in Second Round
#2 Marquette in Second Round
#3 Baylor in Second Round
2024
#3 Kentucky in First Round
#3 Baylor in Second Round
2025
#2 St. John's (NY) in Second Round
#3 Wisconsin in Second Round
#3 Iowa State in Second Round
Summary of Top 3 Seeds Losing in the First Weekend
(One Orange X = One Top 3 Seed Losing in First Round; One Blue X = One Top 3 Seed Losing in Second Round)
2000 - x x x x x x x x
2001 - x x x x
2002 - x x x x
2003 - x x x
2004 -
x x x x x
2005 - x x x x x
2006 - x x x x
2007 - x x
2008 - x x
2009 -
2010 - x x x x x
2011 - x x x x
2012 - x x x x
2013 - x x x
2014 - x x x x x x
2015 - x x x x x
2016 - x x x x
2017 - x x x x
2018 - x x x x x x
2019 -
2021 - x x x x x x
2022 - x x x x x
2023 - x x x x x
2024 - x x
2025 - x x x
So, I am not sure there is some super obvious trend, at least with this one statistic ... it sort of ebbs and flows. However, this does jive with my memory from my college and immediately-post-college years that the "golden age of upsets" seems to have been from 2012 to about 2018, with two top 3 seeds going down in the First Round in 4 out of 5 years from 2012 to 2016. Then it seems we had another surge post-COVID from 2021 to 2023, and there have been fewer top teams losing early in the past couple of years. A lot of the so-called upsets from last year were games like #12 McNeese upsetting #5 Clemson (which, IIRC, like everybody and their brothers picked, lol) or #6 BYU beating #3 Wisconsin in the Second Round ... not exactly earth shattering. There was #10 Arkansas beating #2 St. John's (NY) in the Second Round, but I also recall a lot of people wondering if they were frauds.