Michigan State And The Biggest NCAA Tournament Upsets Ever

1993(13) Southern1555(4) Georgia Tech19188.8 1993(15) Santa Clara1605(2) Arizona20196.0 2012(15) Norfolk State1443(2) Missouri20281.6% YEARWINNERELOUPSET VICTIMELOUPSET PROBABILITY 1999(14) Weber State1601(3) North Carolina19969.0 2014(14) Mercer1652(3) Duke19678.5 1987(14) Austin Peay1592(3) Illinois20226.1 Unsurprisingly, the list is dominated by 15-seeds that beat 2-seeds. Six of the eight all-time 15-2 upsets make the list, leaving out Richmond over Syracuse in 1991 and Lehigh over Duke in 2012, which Elo doesn’t consider to have been especially unlikely.3This is partly because Elo accounts for geography; the Richmond-Syrcause game was played just 100 miles from Richmond’s campus in College Park, Maryland, for example. In addition to Norfolk State’s win over Missouri, Coppin State’s win over South Carolina in 1997 also rates as having been slightly more unlikely than the Michigan State result, although only barely so. Florida Gulf Coast’s win over Georgetown in 2013 and Santa Clara’s over Arizona in 1993 are in the same vicinity.But Michigan State was the highest-rated team on the list according to Elo. Not even Tom Izzo is immune from March Madness.CORRECTION (March 20, 12:10 p.m.): A previous version of this article gave the incorrect number of upsets by a No. 12 seed of a No. 5 seed listed in the table. The table lists six such upsets, not seven.[Check out FiveThirtyEight’s 2016 March Madness Predictions. 1995(14) Old Dominion1646(3) Villanova20217.0 1997(14) Chattanooga1593(3) Georgia19249.6 2001(15) Hampton1514(2) Iowa State18886.7 2013(15) FGCU1615(2) Georgetown19905.6 Having grown up a few minutes from the Michigan State campus, I’m a little bit upset about today’s upset. After two decades of Michigan State coach Tom Izzo’s amazing record in post-season play, we Spartan fans had grown to assume this was the sort of thing that only happens to Duke.But No. 2-seeded Michigan State lost to No. 15 Middle Tennessee State in St. Louis in one of the most memorable upsets ever in the NCAA Tournament. Unlike several of the purported “upsets” earlier in the first round, where the worse-seeded team was actually the favorite, this one was a real shock. In fact, our March Madness predictions had given Michigan State a 95 percent chance to win, while Vegas had the Spartans as 16.5-point favorites.So here’s a question I’m almost too embarrassed to ask: Was this the biggest NCAA tourney upset of all-time? The answer is that it isn’t quite, although Michigan State is possibly the best team to have lost its opening game.According to our Elo ratings, the biggest upset since the NCAA Tournament expanded to 64 teams in 1985 was Norfolk State over Missouri in 2012; Elo would have given Norfolk State just a 1.6 percent chance to win.1The FiveThirtyEight forecast model at the time, based on other computer rating systems, had similarly long odds: a 2.8 percent chance for Norfolk State. It isn’t that Missouri was all that great, but Norfolk State looked like an especially easy mark, having barely outscored its opponents during the regular season against one of the weakest schedules in the country.Middle Tennessee, by contrast, can play a little bit. They beat a major conference team, Auburn, during the regular season, and came within 6 points of VCU. No, they aren’t the 1967 UCLA Bruins, but Elo would have seeded Middle Tennessee as a 14 instead of a 15. A big part of that was their .386 shooting percentage from 3-point range entering the game; that translated into 11 for 19 from behind the arc this afternoon.However, Michigan State looked like a very strong 2-seed. Elo had the Spartans as the second-best team in the country, after Kansas, and Las Vegas betting lines had given Michigan State the second-best chance of winning the tournament. Thus, Middle Tennessee’s pregame win probability was just 5.5 percent according to Elo.2Note that our forecast model for this year combines Elo with other rating systems, but I’m using Elo alone for these historical comparisons since we have data on it going back all the way to 1985. In this case it doesn’t matter, however; Middle Tennessee’s upset probability was about 5 percent according to both Elo and our model. Here’s the complete list of the biggest upsets: 2005(14) Bucknell1585(3) Kansas19416.7 2005(13) Vermont1650(4) Syracuse19999.4 2016(15) Middle Tenn.1638(2) Michigan St.20785.5 2015(14) UAB1602(3) Iowa State19599.1 2013(14) Harvard1671(3) New Mexico19589.8 The biggest upsets in the men’s NCAA Tournament, since 1985 1997(15) Coppin State1513(2) South Carolina19635.4 read more