March Madness is known for chaos, but history shows there are clear patterns hidden beneath the upsets. For bettors and bracket builders alike, recognizing consistent March Madness betting trends can be the difference between guessing and making informed picks. While every tournament delivers surprises, certain outcomes happen far more often than people expect.
From early-round upsets to deep Cinderella runs, the tournament tends to follow repeatable scripts. Lower seeds routinely outperform expectations, while even top teams aren’t immune to shocking exits. Understanding these March Madness betting trends helps you strike the right balance between picking favorites and identifying the right spots for upsets.
On this page, we’ll dive into nine March Madness betting trends to help you build your brackets. Make sure to read through OddsTrader.com‘s approved list of March Madness sportsbooks to get the best value before placing your bets.
Don’t Miss These March Madness Betting Trends
When filling out your bracket, these March Madness betting trends can help set you apart from the pack. Don’t only take chalk, but don’t go overboard with upsets, either.
Here are nine trends to keep in mind when building your brackets:
In 12 of the last 14 tournaments, a team from the First Four has gone on to reach the Round of 32.
This trend highlights the value of momentum, as these teams enter the main bracket already battle-tested with a win under their belt. Rather than being at a disadvantage, First Four teams often carry rhythm and confidence into their next matchup, which is something higher seeds sometimes lack after a long layoff.
This year, the First Four field includes No. 16 seeds Prairie View A&M, Lehigh, UMBC, and Howard, along with No. 11 seeds Texas, NC State, Miami (OH), and SMU. While 16-seeds rarely advance past the first round, the 11-seed play-in winners are especially worth watching. Historically, that group has produced multiple Round of 32 teams, and even deeper runs, making them a popular target when applying March Madness betting trends.
Over the past 17 tournaments, a No. 1–4 seed has been knocked out in the opening round 15 times.
Despite their strong resumes and favorable matchups, top seeds are far from immune to early-round chaos. Public perception often overvalues these teams, but history shows that at least one will stumble almost every year. This makes it one of the most important March Madness betting trends to keep in mind.
This year, that group includes No. 1 seeds Duke, Florida, Arizona, and Michigan; No. 2 seeds UConn, Houston, Purdue, and Iowa State; No. 3 seeds Michigan State, Illinois, Gonzaga, and Virginia; and No. 4 seeds Kansas, Nebraska, Arkansas, and Alabama.
While most will advance as expected, the numbers suggest at least one upset is likely. Identifying the most vulnerable favorite in this tier can be a key edge when building your bracket.
In three of the last five tournaments, a 15-seed has pulled off a first-round upset, and all of those teams advanced to at least the Sweet 16.
What used to be considered a once-in-a-generation shock is now a legitimate trend, with these underdogs not just winning a game but building real momentum. For bettors, this signals that blindly advancing 2-seeds may be risky, especially when a 15-seed has the right mix of experience, shooting, or matchup advantages.
This year’s 15-seeds, Furman, Idaho, Queens (N.C.), and Tennessee State, will all enter as heavy underdogs, but recent history suggests at least one could make things interesting. While picking the exact upset is difficult, targeting a 15-seed with strong guard play or scoring upside aligns with proven March Madness betting trends and could give your bracket a major boost.
A No. 13 seed has earned at least one opening-round victory in 28 out of 40 tournaments. None won last year, and only once before (2014–15) have 13-seeds failed to win in back-to-back tournaments.
That history strongly suggests a bounce-back is likely, making this one of the more reliable March Madness betting trends when targeting first-round upsets.
This year’s 13-seeds: Cal Baptist, Troy, Hawaii, and Hofstra, each fit the profile of teams capable of pulling off a surprise.
While not all four will break through, the odds point toward at least one advancing. Identifying the most experienced or well-balanced team in this group could give you a key edge when building your bracket.
In 34 of the past 40 tournaments, a 12-seed has won a first-round game. In three of the last four years, more than one 12-seed has advanced.
Few March Madness betting trends are as consistent as the 12-over-5 upset, making it almost a staple when filling out brackets. These teams are often mid-major champions or experienced squads that are underseeded relative to their true ability.
This year’s 12-seeds, Northern Iowa, McNeese, High Point, and Akron, once again present multiple opportunities for an upset. Given the recent trend of multiple 12-seeds advancing, it wouldn’t be surprising to see two (or more) break through.
Targeting the right matchups within this group is key, as these teams frequently outperform expectations and can provide major value in both brackets and betting markets.
Every tournament for the past 17 years, and 38 of the last 40 overall, has featured at least one double-digit seed reaching the Sweet 16.
This is one of the most dependable March Madness betting trends, reinforcing the idea that at least one Cinderella run is likely. Whether it’s a hot-shooting team or a favorable matchup path, these lower seeds consistently find a way to break through the bracket.
Double-digit seeds to watch this year include NC State, Santa Clara, and Texas A&M. All three grade out better than their seed suggests based on KenPom rankings, signaling potential value.
Targeting undervalued teams like these is a smart way to align with historical trends while giving your bracket upside beyond the chalk.
Last year marked only the second time in the past 15 tournaments that all four No. 1 seeds advanced to the Elite Eight.
What we saw last year was an extremely rare outcome, and history suggests it’s unlikely to happen again in back-to-back years. Even though No. 1 seeds are the most reliable teams on paper, March Madness betting trends show that at least one typically falls short before reaching that stage.
This year’s top seeds, Florida, Duke, Michigan, and Arizona, enter with high expectations, but that doesn’t mean they’re all safe. In fact, this could be a spot to fade one or more of them when building your bracket.
Identifying which No. 1 seed has the toughest path or potential matchup issues can be a key edge, especially if the field returns to its more typical level of chaos.
A No. 1 seed has made the Final Four in 12 of the last 13 tournaments.
While early-round chaos is a defining part of March Madness, this trend shows that elite teams still tend to separate themselves as the tournament progresses. No matter how unpredictable the bracket looks, at least one top seed almost always finds a way to survive and make a deep run.
Because of that, it’s generally a smart strategy to include at least one No. 1 seed in your Final Four. You can still take calculated risks elsewhere in your bracket, but completely fading all top seeds goes against one of the most consistent March Madness betting trends.
Balancing a high-upside Cinderella pick with a reliable No. 1 seed is often the key to building a strong, competitive bracket.
No team has ever captured the national title after dropping its opening game in the conference tournament.
This is a strong indicator that teams entering March on the wrong foot rarely recover enough to make a championship run. Momentum matters, and this is one of the more overlooked March Madness betting trends when evaluating true title contenders.
This year, that group includes No. 3 seeds Illinois and Michigan State, along with No. 4 seeds Alabama and Nebraska. While all four are talented enough to win multiple games, history suggests their ceiling may be limited.
When narrowing down your championship picks, it may be wise to look elsewhere and prioritize teams entering the tournament with stronger form.
Final Verdict
Remember, these March Madness betting trends should be “one piece of the pie,” not your entire process. Consider these trends as you’re building your brackets or placing your wagers, but don’t become too reliant on them. Make sure to also read through head-to-head matchups and learn about each team’s roster to be fully informed for your March Madness bets.
