Nobody picks longshot winners consistently. That's the honest first sentence. What a good bettor can do is find longshots that win more often than the odds say they should — and that's how you make money over hundreds of bets, not by being right every time.

Here's the process.

Step 1: Set the right target

You are not trying to predict the winner. You are trying to find a price that's wrong. If a team's true chance of winning is 22% and the odds imply 15%, that's a profitable bet — even though the team loses 78% of the time. Your target is value, not accuracy.

This reframing matters because it changes what you look for. You stop asking "who will win?" and start asking "who is mispriced?"

Step 2: Compare your probability to the odds

Build (or borrow) a rough model of each team's chance. You don't need anything exotic — a consistent estimate beats a fancy one. Then convert the odds to implied probability and compare:

  • If your probability is higher than the implied odds → the bet has positive expected value. Consider it.
  • If your probability is lower → no edge. Pass, even if the payout looks juicy.

You can estimate from advanced stats, recent form, head-to-head matchups, or a blend of all three. The key is doing it the same way every time so you can learn what works.

Step 3: Watch for these value signals

Longshot value tends to hide in predictable places:

  • Line movement. If a longshot's odds shorten (from +900 to +600) without an obvious reason, sharp money may be behind it — a hint the early price was too generous.
  • Reverse line movement. When most of the public bets one side but the line moves the other way, the books are responding to sharp money. Follow the line, not the crowd.
  • Key injuries to the favorite. An injury to a star can swing a game more than the public realizes, especially early before the line fully adjusts.
  • Public teams and marquee matchups. Fan favorites get overbet, inflating their opponents' odds. Underdogs in hyped games are often priced with extra juice.
  • Small markets. Lower leagues and obscure props are priced less accurately, leaving more longshot value for the diligent.

Step 4: Factor in the situation

Beyond the stats, situational angles create upsets that lines only partially capture:

  • Motivation and letdown spots. A favorite coming off an emotional win, or looking ahead to a bigger game, can underperform.
  • Rest and travel. A road team on short rest, or a long road trip, is often worse than its baseline.
  • Weather and conditions. Wind, rain, or extreme heat compress skill gaps — good news for underdogs.
  • Matchup quirks. Certain styles trouble certain opponents regardless of overall record.

Step 5: Track everything

The only way to know if you have an edge is to measure it. Log every bet: the date, sport, market, odds, stake, your reasoning, and the result. After a meaningful sample (100+ bets), review it:

  • What's your hit rate, and what's your return on investment (ROI)?
  • Which signals produced value, and which were noise?
  • Did your winners' odds pay enough to cover the losers? That's the only question that ultimately matters.
Closing line value is the gold standard. If you consistently beat the closing line — the final odds before the event — you're getting better prices than the market's last word. That's strong evidence of a real edge.

Step 6: Keep the discipline from the strategy guide

Even with a good process, longshots lose often. Small stakes, a dedicated bankroll, no chasing, and no parlays-as-strategy. The process finds the value; the discipline keeps you solvent long enough to collect it.

The honest bottom line

Picking longshot winners isn't about being smarter than everyone — it's about being more patient and more consistent than the crowd. Find prices that are wrong, bet them small, and let the math play out over time.

New to the concepts here? Start with What Is a Longshot in Betting?, then review Longshot Betting Strategy for the bankroll rules that keep this process safe.