The Gambler's Fallacy

The Gambler’s Fallacy and its Relation to Sports Betting

For sports betting enthusiasts who enjoy a flutter on the games they love, the Gambler's Fallacy is a bit like a siren song that leads you astray, ultimately resulting in costly betting decisions.

This cognitive bias, aptly named after those who've succumbed to its allure, can draw you into making misguided wagers grounded in the unfounded belief that prior outcomes wield influence over future sporting events.

While most individuals associate this thinking with casino games like blackjack and roulette, its tentacles extend far beyond the casino floor, entwining themselves in various forms of gambling and even everyday situations.

In this article, we will embark on an exploration of what the Gambler's Fallacy encompasses, its relevance within the realm of sports betting, and invaluable strategies to circumvent its treacherous traps, ensuring that your hard-earned money remains intact.

Origins of the Gambler's Fallacy

Roulette wheel on number 17

While the term "Gambler's Fallacy" was first introduced by the economist John Maynard Keynes in 1921, its association is more closely tied to the world of gambling, particularly in casinos and bookmaker establishments.

One of the most iconic instances of this fallacy unfolded at the prestigious Monte Carlo Casino in 1913, etching itself into the annals of gambling lore. In an extraordinary streak, the roulette ball remarkably landed on black a staggering 26 consecutive times.

This unprecedented run of black numbers sent shockwaves through the casino, drawing a captivated crowd around the roulette table. As the black numbers continued to dominate, many gamblers fell into the trap of thinking that red must be "due" to appear, leading them to place ill-fated bets on red.

Of course, eventually, a red number did emerge, granting some gamblers their long-awaited victory. However, the question remains: how many times did they bet on red and lose money before that 27th spin finally favoured them?

For those who kept increasing their bets throughout the sequence, driven by the conviction that "red was surely due soon," losses could have mounted significantly before the black streak came to an end.

Subsequently, some of these individuals might have developed the false belief that a substantial streak of reds was bound to follow, perpetuating the cycle of the fallacy.

This captivating event is frequently cited as a quintessential illustration of the Gambler's Fallacy in action, which is why you may also encounter it referred to as the Monte Carlo Fallacy in gambling circles.

The Maths - Simplified!

Let's imagine you're engaged in the simple act of flipping a standard coin. This coin has two sides: heads (H) and tails (T).

With each flip of the coin, the probability is 50% for it to land on heads and another 50% for it to land on tails. These probabilities remain consistent, completely unaffected by what happened in previous flips.

Now, this is where the intriguing fallacy creeps in.

Man looking at board with maths equations

You might find yourself believing that if you've encountered a series of consecutive heads, like HHHHH, the next flip is more likely to produce tails because you're convinced it's "due" to balance things out. This misconception is where most people stumble when grappling with probability.

In actuality, each coin flip stands as an independent event.

The coin possesses no memory or preference based on past outcomes.

The likelihood of heads or tails appearing on the subsequent flip steadfastly maintains itself at 50%, just as it did in the previous flips.

So, even if you've witnessed heads appearing five times in a row, the odds of heads showing up once more in the next flip still stand at 50%, mirroring the 50% chance for tails.

The fundamental mathematical principle at play here is that the probability of each event, be it heads or tails, remains constant, unswayed by prior results.

While it's true that, eventually, perhaps after a million or more coin flips, you may observe results approaching an equilibrium of roughly 50% heads and 50% tails, it's essential to recognise that in most gambling scenarios, individuals are typically dealing with shorter streaks of bets.

The Gambler's Fallacy in Sports Betting

Football boots and ball on Euro currency

So how does this tie into sports betting?

Many punters fall into the trap of thinking that the probability of a particular outcome in an event is swayed by past outcomes, particularly in situations involving random events.

This could be an outcome of a football match, a horse race or really any sporting event that isn't a complete one-off and can build up to a run of winning or losing scenarios.

Here are some examples of how the Gambler's Fallacy relates to sports betting:

Football streaks

On doing your betting research, you find that a football team won 50% of their matches last season. You see that this season the team have won six games in a row and may believe that they should either be due to lose a game soon, or their streak should continue.  

However, past wins don't dictate future outcomes and results can vary based on opposition, injuries and even the weather.

Perhaps Erling Haaland isn't able to play for Manchester City this week, putting a dent in their scoring chances. It is easy to see how simple things like this can have a major impact on a team's winning or losing streak.

Horse Racing form

In the world of horse racing, you might come across a horse that has recently clinched victory in several consecutive races.

The temptation to assume that the horse is "over-performing" and therefore unlikely to win its next race can be strong. On the other hand, you may think that the horse is more likely to continue on a winning run.

As with football players, a horse's performance hinges on a multitude of variables, extending far beyond its previous triumphs. Professional tipsters often spend a lot of time analysing all sorts of factors other than just winning streaks.

Tennis player's hot streak

Consider a tennis player who has been on an impressive winning run. It's not uncommon for punters to speculate that this player is on the brink of losing soon.

However, in the sport of tennis, a player's performance can be influenced by many factors that stretch beyond their past results, making it a complex and unpredictable game.

How to Avoid Falling into the Gambler's Fallacy Trap

  • Embrace Probability Insights: It's imperative to recognise that the outcome of a sporting event is a complex interplay of various factors. Past results should be viewed as historical data rather than predictors of future performance.
  • Harness the Power of Data: When embarking on your sports betting ventures, your best ally is rigorous statistical analysis and extensive research. Rely on concrete data-driven insights rather than making decisions based on mere intuition or gut feelings.
  • Enforce Robust Bankroll Management: To safeguard your financial stability in the world of sports betting, establish crystal-clear limits for your betting budget. Stick to these limits steadfastly, refraining from chasing losses or making impulsive wagers driven by perceived trends.
  • Tap Into Expertise: Don't hesitate to seek counsel from seasoned professionals, such as sports betting tipsters and experts. Their wealth of experience can provide you with valuable insights and recommendations firmly grounded in data and research, enhancing your decision-making prowess.


To sum it all up, the Gambler's Fallacy is like a friendly reminder that as humans, we often look for patterns and predictability even when they aren't really there. When it comes to sports betting, it has tempted many well-meaning bettors into making expensive choices, all because they thought past results could somehow control the future.

But as we've seen throughout this article, every sports event is its own unique thing, influenced by all sorts of factors that can change in an instant.

If you want to be a successful sports bettor, it's crucial to understand the basics of probability, resist the urge to rush into decisions based solely on what happened before, and put in the time for thorough research backed by solid data.

And don't forget about the importance of managing your betting budget wisely and considering the advice of experts. They can provide valuable insights to help you navigate the sometimes unpredictable world of sports betting.

In the end, the Gambler's Fallacy teaches us to approach sports betting with a clear, data-driven mindset. By doing that, you can boost your chances of making smart, profitable choices while steering clear of the traps this cognitive bias can set.

So, in the ever-changing betting world, remember that understanding the Gambler's Fallacy isn't just about probability – it's about making informed decisions that can lead to success.

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