How to Bet the Underdog Betting System

Last updated: August 2026

The Underdog Betting System is a baseball betting strategy that focuses on underdogs coming off a win. It uses the idea that MLB teams experience winning and losing streaks throughout the long regular season, regardless of their overall record. The strategy looks for underdog moneyline opportunities after a victory, but results depend on the odds, wager selection, and the games included in the system.

The goal is to find underdogs whose potential payouts justify the risk of losing more bets than winning. A previous win does not guarantee another, so bettors should track results over time rather than assume the system will produce a profit.

Underdog Betting System Explained

Major League Baseball’s regular season lasts 162 games, giving teams more opportunities to experience winning and losing streaks than leagues with shorter schedules.

Teams often play on consecutive days, sometimes across several series in a row. Scheduled doubleheaders and postponed games that are later made up can also affect pitching plans, rest, and lineup availability.

For bettors, the length of the season creates a large sample of games to evaluate. However, a long season does not guarantee that an underdog betting strategy will be profitable. The odds and the actual results still determine whether the approach produces a return.

How the Underdog Betting System Works

The strategy focuses on underdogs that won their previous game. The idea is to look for another opportunity after a win rather than automatically backing a team because it is considered weaker.

Baseball teams rarely dominate every game across a 162-game season. Even teams with strong overall records lose regularly, while teams near the bottom of the standings can win consecutive games. That variation is one reason bettors may evaluate underdogs on a game-by-game basis.

Before placing a wager, compare the moneyline with your estimate of the team’s chances to win. A plus-money price can offer a larger payout, but it also reflects the risk associated with that outcome.

Underdog Betting System Differences

Hockey isn’t quite the same, perhaps because of the intense, physical beating the game exacts and the greater impact that each score has on the outcome of a game; just one lucky break can end up sending a game in a different direction. Baseball is also a sport that is more prone to streaks, both winning and losing.

This means that taking an underdog who lost the day before might not be advisable, at least not in some betting systems.

Past results can help organize a betting strategy, but they do not establish that a trend will continue. A systematic approach to sports betting helps bettors apply consistent rules, record wagers, and evaluate performance without relying on a few recent results.

However, if an underdog won the day before, a streak might be coming, whether the win came over the present day’s opponent or at the tail end of another series.

If the favorite also won, though, you can still profit.

A betting strategy of taking the underdog coming after a win, no matter who the opponent, has yielded a profit for six of the past seven regular seasons.

2025 was the exception, but that was a year when favorites won an inordinate number of times, leading to gambling distress for many in the sport.

What You Need in the Underdog Betting System

The underdog betting system requires a lot of patience. You do get a higher payout if you win, but you need that higher payout to compensate for the fact that you will still lose more bets than you win.

This can be stressful for some bettors and cause them to abandon the strategy while they are at a low point in their bankroll. If you quit then, though, you don’t get the upside that comes when the system turns and starts to work for you.

Conclusion

The Underdog Betting System requires patience, consistent recordkeeping, and realistic expectations. A strategy that performed well in past seasons may not perform the same way in future games.

Track the odds, stakes, wins, losses, and overall return before deciding whether the approach fits your betting goals. No betting system guarantees profit, and you should only wager amounts you can afford to lose.

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Important: Sports betting involves risk. No strategy guarantees results, and managing exposure is essential.

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About the Author

D.S. Williamson

Since 2008, D.S. Williamson has written about sports and sports handicapping. His philosophy is value-based, meaning statistics and other handicapping factors are only useful when compared with the available wagering odds. He believes bankroll management and consistently making value-based wagers are the most important factors separating successful sports bettors from unsuccessful bettors.

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