Best Underdog Picks: A Contrarian Betting Strategy

Why Underdogs Cover More Than You Think

The public loves favourites. When casual money floods one side of a game, sportsbooks adjust the line to balance their risk, and that adjustment often pushes the spread past the true margin. The result: underdogs get extra points they shouldn’t have, making them more likely to cover.

According to TeamRankings’ NFL ATS data, underdogs in the NFL have covered the spread at a rate above 50% over multiple seasons. That might sound small, but remember, you only need to hit 52.4% at standard −110 juice to be profitable. Underdogs routinely clear that threshold in specific situations.

The key word is “specific.” Blindly betting every underdog won’t work. Contrarian betting is about finding the right underdogs at the right time. That means understanding which situations historically produce the most profitable underdog spots.

The Best Underdog Betting Situations

Small Underdogs (3 Points or Fewer)

Small underdogs are often essentially coin-flip games where the public perception creates a slight lean toward the favourite. Since 2015, NFL underdogs of 3 points or fewer have covered at a profitable rate while winning outright nearly half the time. These are the safest underdog bets because the margin between the teams is genuinely thin, and the public’s favourite bias inflates the line in your favour.

Divisional Underdogs

When teams in the same division meet, the underdog knows its opponent better than any outside analysis suggests. Divisional games are historically closer than the spread implies. As NxtBets’ trend analysis highlights, divisional underdogs have been one of the most consistent profitable trends in the NFL over the past decade, covering at rates well above breakeven.

Early-Season Underdogs

The first few weeks of the NFL season are a goldmine for underdog bettors. Sportsbooks and the public are both working with outdated information from the previous season. Teams that got worse look better than they are, and teams that improved are still being underestimated. Historically, underdogs in the first three weeks of the season cover at elevated rates because the market hasn’t fully adjusted to the new reality yet.

Underdogs After a Blowout Loss

Public perception overreacts to recent results. When a team gets blown out one week, the public expects it to happen again the next week. That creates inflated spreads and extra value on the losing team. Contrarian bettors know that one bad game doesn’t define a team, and they capitalise on the overreaction by taking the points.

How Public Money Creates Underdog Value

To understand why underdog betting works, you need to understand how sportsbooks set lines. The opening line reflects the book’s estimate of the true margin between two teams. But once betting begins, the line moves based on where the money goes.

When 70–80% of bets land on the favourite, which happens regularly in marquee matchups, the book moves the spread to attract action on the underdog side. That means the underdog is now getting more points than the book’s model originally suggested they should. You’re essentially getting a bonus for betting against the crowd.

This is why sports betting strategies that account for public betting percentages tend to outperform naive approaches. You’re not just picking who you think will win, you’re identifying where the market has mispriced the game because of public bias.

Your Cheat Sheet: A Step-by-Step Approach to Profitable Betting

Step 1: Check public betting percentages. Multiple free tools show what percentage of bets and money are on each side. When 70% or more of the public is on the favourite, the underdog is worth a closer look.

Step 2: Verify the situation. Does this underdog fit one of the profitable profiles? Small spread, divisional game, early season, or bouncing back from a blowout? The more boxes it checks, the stronger the play.

Step 3: Confirm with data. Use AI-powered analysis or your own model to verify that the underdog’s true win probability is higher than the implied odds suggest. Contrarian logic tells you where to look; data confirms whether the bet is actually worth placing.

Step 4: Size your bet appropriately. Underdog bets are inherently higher-variance than favourites. Don’t oversize. Keep individual wagers to 1–3% of your bankroll, and let the volume of profitable spots compound over a full season.