Common Sports Betting Myths That Cost Bettors Money (And the Facts Behind Them)

Sports betting is now mainstream entertainment. With a legal betting market expanding in North America and Europe, and with each passing week, bettors have betting options, they can wager in real time, and they have instant access to market odds. They also have better tools and information than before. Despite all of this, most bettors lose money.

This is not due to sportsbooks being unbeatable or to winning being impossible. It is largely due to bettors’ reliance on beliefs that feel correct, but are in fact, wrong. These beliefs, or sports betting myths, dictate how people bet, how much they bet, and how people respond to wins and losses.

This paper analyzes the most common sports betting myths and why they are detrimental to a betters’ bankroll. Each myth is examined using probability, market behavior, and betting data. This paper will not offer new strategies, or guarantee profit. It simply seeks to replace beliefs with knowledge and provide the bettor with a better understanding.

The Mathematical Reality Behind Sports Betting

To assess the impact of betting myths being expensive, it is first important to grasp how sportsbooks price odds, and more importantly, where the advantage is for the sportsbooks.

Standard sports bets have what is called the vig captured in the odds. One example would be point spread or totals bets and odds of -110 on each side. This means the bettor is risking 110 units to win 100 units.

With these odds, the winning percentage needed to ‘break even’ is 52.38%. That percentage is derived from the math in the wager, not a projection or guess. A bettor winning only 50% of these bets will be guaranteed to lose money, even though it seems as though 50% is a good win percentage.

Sportsbooks do not need to forecast the outcome of a bet with great precision. They only need to ensure that the betting volume, wagered on the outcome, ensures the price of the wager gives them a win. In betting on the NFL, NBA, and European football leagues, there is great efficiency in the betting market, and odds account for the team strength, injuries, travel, weather, and even the sentiment of the public.

Because of this efficiency, the betting myths are misleading, and what appears to be the case is already in the odds.

Myth 1: “Favorites Are Safer Bets”

Bettors think that wagering on favorites increases their chances of winning an individual wager. Favorites do win an outright majority of games, but that is not useful information for bettors trying to be profitable.

Betting lines account for team strength, which is why there are point spreads set on games. If a team is favored by 7 points, that doesn’t mean the oddsmakers think that team will win; it means that team will win by more than 7 points, which is a clear indication of their strength. Historically, there is not a significant difference in the rate of covering the spread between favorites and underdogs as a generalized group.

Betting on favorites becomes less of a sure thing because of the way lines are set. The sportsbook knows that the public bets on certain factors, such as popular teams or players, and likes to try to exploit that by adjusting the lines. If they are favored by the sportsbook, they are likely to be underpriced or overvalued in the market.

Betting on favorites without regard for the line will not create the safety advantage intended. Betting on favorites will do the opposite of what bettors think, as they are paying a tax on their perceived reliability.

Myth 2: “If I’m on a Hot Streak, I’ve Figured Something Out”

Winning multiple bets in a row can lead a person to think they have developed a skill. This can lead to increased confidence, making the person less careful about the bets they take, and leading them to choose larger bets. This reaction is an example of the hot-hand fallacy.

In the context of a random system, winning multiple bets in a row, even when there is no skill involved, is something that happens from time to time. Take a person betting by flipping a fair coin. That bettor will occasionally win a streak of six bets. In a sample of 1000 bets, winning streaks of that size will occur; they will happen.

Research on betting data shows that people betting use the outcome of their bets to justify their betting strategies. They will see a large variance in their data, and instead of using that as an indicator of their data regressing to the mean, they will see that as a sign of skill. A person betting using that type of betting data strategy is likely to lose a lot of their money.

The best-case scenario is that the bettor is winning a lot of money. In that case, the person betting will increase the amount of money that they are risking. In the long run, the person will lose a lot of money as a result of the bets that they take.

Myth 3: “After Losing Several Bets, I’m Due for a Win”

The gambler’s fallacy believes that short-term outcomes must balance out in some way. For example, a bettor may conclude that the next bet will more likely payout after losing several in a row.

This theory is incorrect. In bets with the same conditions, the payout is not dependent on the previous outcomes. For example, a coin with five heads in a row will still have a 50% chance of landing on tails next.

However, this myth is more damaging. It encourages loss chasing, resulting in an increase in stake sizes. This is not due to the bet providing better value, but an emotional pressure to recoup their losses as quickly as possible.

The strongest predictor of long-term betting failure is loss chasing. It takes short-term variance and turns it into long-term losses.

Myth 4: “Placing More Bets Increases My Chances of Winning”

Some bettors think that by betting more often, they will smooth out the variance in their betting results and eventually produce a profit. More bets will indeed reduce randomness for bettors who actually have an edge. However, for bettors who do not have an edge, increased volume will actually have the opposite impact.

Each wager that is placed with a negative expected value increases the bettor’s losses. The margin of the sportsbook is applied to each bet to determine the expected value.

Effect of Volume on a Negative-ROI Bettor

The point is clear: placing larger bets does not give you more of an advantage. It just speeds up the outcome of whatever your strategy already produces.

Myth 5: “Parlays Are the Best Way to Make Big Money”

It is easy to see the appeal of a parlay bet. The most obvious appeal is the large payouts for a small initial stake. Additionally, being able to predict multiple outcomes is also enticing. Despite the appeal, there is a large downside that most people overlook.

Adding legs to a parlay bet considerably increases the overall chance of the bet losing. Even if the individual bets have value, combining multiple bets always increases the house’s edge.

This is also evident in official sportsbook revenue reports.

Sportsbook Hold by Bet Type

For sportsbooks, parlays are one of the most lucrative types of bets. That said, there are still some strategic reasons for betting on them, but they become less efficient for players aiming for long-term profitability.

Myth 6: “Home Teams Always Have a Big Advantage”

Although it is commonly misunderstood, there really is an advantage to playing on home turf. Although home teams statistically tend to play better, it is shown that this advantage has been declining with the majority of professional sports leagues.

The venue is impacted. Improved travel, more consistent playing conditions, better oversight of the referees, and more preparation to combat the venue all decrease the importance of where the game is being played.

Because of the reasons stated above, wagering on a home team is not an advantage. Any advantage that is present has already been factored into the betting line.

Myth 7: “Professional Bettors Win All the Time”

Winning expectations are placed on bettors who are described winning consistently and bettors are always facing long losing durations, even skilled bettors.

Everyone faces variance. A legitimate advantage winning bettor faces losing streaks even when he is losing due to random chance.

Losing Streak Probability at a 55% Win Rate

Over hundreds, or potentially thousands, of placed bets, these patterns become statistically believable. Skill minimizes losses over time, but it does not eliminate volatility.

Myth 8: “Betting Systems Guarantee Profits”

Betting systems that include the Martingale system guarantee recovery by loss defences, which include raising defences (in this case, the bet) after each loss. Although these systems may indicate short-term wins, the bet remains unaffected.

A system is incapable of making a negative expected value wager a positive one. Instead, it concentrates risk into a smaller number of larger bets. Losing streaks which defences cannot handle (either bet limits or bankroll limits) result in losses that can be described as catastrophic.

Systems fail not just as a result of bad luck. Systems also tend to fail because of the system’s ignorance of probability as well as variance.

Myth 9: “Insider Information Beats the Market”

While secret insider tips are enticing, the reality is that modern betting markets level the informational playing field almost instantaneously. Sports betting sites track team announcements, injuries, and betting patterns, as well as make changes to their betting lines in real-time.

Even in the most significant betting markets, new public information is reflected in the odds within minutes, and access to legally actionable insider information is nearly impossible.

The majority of actionable tips that the betting public hears are already calculated in the odds long before they are made public.

What Actually Helps Bettors Over Time

While myths hurt bettors, a few principles consistently help reduce losses and improve decision-making.

Line Shopping

• Long-term measurable impacts can occur with small changes in probability.
• In sports like football, key margins make half-point differentials important.
• Increased access to different sportsbooks regulates pricing efficiency to bettors.

Bankroll Discipline

• Emotion-based decisions are removed by fixed staking.
• This protects you against drawdowns from randomness.
• This enables evaluations over long periods determined by results.

Closing Line Awareness

• Beating the closing line is a sign of a positive expected value.
• Good pricing is determined more by consistency rather than the individual outcomes.
• Short-term losses won’t be a pricing invalidation.
• Consistency is more important than a single outcome.

The Real Cost of Believing Betting Myths

Sports betting myths persist because they appeal to intuition and emotion. They simplify a complex activity into comforting narratives: favorites are safer, streaks mean skill, losses must reverse soon.

The reality is less exciting but far more important. Sports betting is a pricing exercise governed by probability, efficiency, and discipline. Bettors who ignore this reality pay for it steadily over time.

Avoiding myths does not guarantee profit, but it prevents unnecessary losses. In sports betting, understanding what not to believe is often the first step toward better results.

Hilbert Mayer

Sports Writer

Hilbert Mayer is a professional sports writer, betting analyst, and content strategist with over 15 years of experience in the sports industry. Before focusing on sports betting analysis and handicapping, Hilbert worked as a sports writer for various news outlets, covering everything from game recaps to in-depth matchup features. Today, he specializes in MLB, NFL, March Madness, and UFC betting, combining his journalistic background with deep statistical expertise and real-world betting insights. His proven track record, sharp reads, and ability to break down complex matchups make him a trusted voice among both casual bettors and seasoned sharps.

Published on: February 16, 2026
Last updated: February 28, 2026

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