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Potential Contenders Most Likely to Ruin Your March Madness Predictions

March Madness: Stay smart when picking your brackets with a look at historical data showing which tournament seeds turn out winners and which ones fall flat.

Potential Contenders Most Likely to Ruin Your March Madness Predictions

Off we go into the madness of March! The NCAA Tournament kicks off this Thursday, and it's time to make our picks and predict which underdogs might just stun the crowd. While three out of four No. 1 seeds are expected to reach the Final Four, history has shown there's more to this dance than meets the eye. Let's dive into the sweet, statistical pool of March Madness to find out which seeds are likely to cause a stir.

Unmasking March Madness: A Closer Look at Upsets

Over the past 39 seasons of March Madness, there have been over 2,500 individual matchups, providing a rich dataset to dissect the patterns of upsets and seeding trends. This wealth of data has revealed some fascinating facts that bracketologists can't ignore as they fill out their brackets.

The Heat Map: Visualizing Upset Probabilities

Winner's Percentage Heatmap Based on Tournament Seeding

By analyzing this extensive statistical pool, we have created a heat map illustrating the historical winning percentages of each seed when facing another seed. Here's a breakdown of the map's key areas:

  • Bottom-left to top-right diagonal: This area represents the winning percentage of teams against opponents of the same seed. This data is relevant mainly for Final Four and National Championship games since teams of the same seed don't face each other until those rounds.
  • Top-left to bottom-right diagonal: This area displays the winning percentages for Round of 64 matchups, providing the most data points. Here, higher-seeded teams typically have a better winning percentage, but certain matchups offer more parity than others.

Whose Cinderella Story Will Emerge?

College Basketball: Fairleigh Dickinson vs Purdue NCAA Matchup

So, which seeds are most likely to cause an upset and send shockwaves through the tournament? Let's take a closer look.

No. 15 Seeds: The Unlikely Heroes

Despite being only one slot higher in seeding, No. 15 seeds have a remarkable track record compared to No. 16 seeds. Since 2021, three different No. 15 seeds have defeated No. 2 seeds, including Princeton's victory over Arizona in 2023, Saint Peter's over Kentucky in 2022, and Oral Roberts over Ohio State in 2021. Even more impressively, No. 15 seeds don't just win their first-round game; they have a surprising 4-7 record in the second round, showing that when they get hot, they can make a real run at the Elite Eight.

San Diego State challenges Florida Gulf Coast in athletic contest

No. 12 Seeds: The Dark Horses

The No. 5 versus No. 12 matchup has become infamous for bracket chaos, and that trend is easy to understand. Historically, No. 12 seeds win 33% of their matchups against No. 5 seeds, making at least one No. 12 seed an annual average upset. To put that in perspective, a No. 12 seed has nearly the same upset potential as a No. 10 seed against a No. 7 seed, despite facing a much higher-ranked opponent. The 5/12 matchup is a staple of March Madness bracket strategy, making No. 12 seeds prime candidates for early-round surprises.

No. 11 Seeds: The Deepest Cinderellas

Men's College Basketball Playoffs - Southern Division Competition

If you're in search of a deep Cinderella run, look no further than the No. 11 seed. Since 2011, a staggering 15 No. 11 seeds have reached the Sweet 16, making them one of the most consistent double-digit seeds to advance beyond the first weekend. To top it off, six No. 11 seeds have even made it to the Final Four, including the 2024 NC State, 2021 UCLA, 2018 Loyola-Chicago, 2011 VCU, 2006 George Mason, and 1986 LSU. Although none of these teams made it to the championship game, they did make quite the run.

No. 8/9 Seeds: The Sleepers

While No. 8 and No. 9 seeds might seem evenly matched in the first round, their real danger lies in the second round. If an 8/9 winner can take down a No. 1 seed, their path to the Elite Eight becomes much easier. Historically, No. 8 and No. 9 seeds hold a 23-29 record against teams seeded No. 2-7. In particular, they have posted winning records against No. 4 and No. 5 seeds in the Sweet 16, proving that when they survive the early rounds, they can go much further than expected.

A Final Word: Which Seeds to Watch Out for

An upset by a No. 15 seed might be memorable, but it's hard to predict. For a more reliable first-round upset, the 5/12 matchup is your best bet. If you're chasing deep Cinderella runs, No. 11 seeds have the longest track record. If you're looking for a high-risk, high-reward bracket, keep an eye on No. 8 and No. 9 seeds poised to knock off a No. 1 seed, especially given any injuries to teams like Duke and Houston. History shows that once an 8 or 9 seed takes down a top team, their run might only be getting started.

[1] NCAA Basketball Tournament Bracket Analysis: March Madness Upsets and Seeding[2] Bracketology Theory: Are 11s the new 10s? And what about 14s?[4] NCAA tournament: For the first time, 16 seeds pull off 2 upsets in the first round

  1. The heat map, developed from March Madness data over the past 39 seasons, provides an illustration of historical winning percentages among seeds, offering significant insights into potential upsets and seeding trends.
  2. In recent years, No. 12 seeds have shown nearly the same upset potential as No. 10 seeds against No. 7 seeds, making them prime candidates for early-round surprises and bracket chaos in the NCAA Tournament.
  3. According to historical records, No. 11 seeds have consistently advanced to the Sweet 16 since 2011, with six of them even reaching the Final Four, suggesting they should be carefully considered for deeper Cinderella runs in the tournament.

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