What are betting markets?
A betting market is simply a category of wager that a sportsbook offers on a sporting event. When you open any sportsbook and click on, say, an NBA game, you will see dozens of different ways to bet on that game. But the vast majority of betting volume worldwide — and the vast majority of edges that analytical bettors find — falls into three core market types: moneyline, point spread, and totals (over/under).
Understanding how each of these markets works is not optional if you want to use data and analytics to find value. Each market type has its own pricing mechanics, margin structures, and inefficiencies. A bettor who understands all three can compare odds across dozens of sportsbooks and identify where the best value lives for any given event. This is where platforms like OddsLab come in, scanning odds across 21 or more sports and three core market types to surface the bets with the highest expected value.
This guide is written for people who are just getting started with sports betting analytics. If you already know the difference between a spread and a total, you might want to jump straight to our guides on expected value or value betting. But if terms like "-110" or "pick 'em" still feel confusing, this article will give you a solid foundation.
Moneyline: the simplest bet
A moneyline bet is the most straightforward wager in sports betting: you are simply picking which team or player will win the game. There is no point spread to worry about and no total to calculate. If your pick wins, you win the bet. If they lose, you lose.
Moneyline odds are expressed differently depending on the format. In American odds (most common in the United States), favorites are shown with a minus sign and underdogs with a plus sign. For example, a favorite at -150 means you need to risk $150 to win $100 in profit. An underdog at +130 means a $100 bet returns $130 in profit if they win.
In decimal odds (standard in Europe, Australia, and on most international platforms), the same favorite might be listed at 1.67 and the underdog at 2.30. The decimal number represents your total return per dollar wagered, including your original stake. So a $100 bet at 2.30 returns $230 total ($130 profit plus your $100 back).
When moneyline bets offer the most value
Moneyline markets tend to be most efficient for high-profile events with heavy betting volume. But inefficiencies still appear, especially in less popular sports and leagues, early-week lines before the market has fully priced in information, and games with significant public bias (where the popular team is overvalued). For more on how to spot these opportunities, read our guide on how to read and compare odds.
Point spreads: leveling the playing field
The point spread (also called the "line" or "handicap") is a number set by the sportsbook to create an even-money proposition between two unevenly matched teams. Instead of betting on who wins outright, you are betting on who wins after the spread is applied.
For example, if the Los Angeles Lakers are -6.5 against the Charlotte Hornets, the Lakers must win by 7 or more points for a spread bet on them to pay out. Conversely, the Hornets at +6.5 can lose by up to 6 points and still "cover" the spread. The half-point eliminates the possibility of a push (tie against the spread).
Most spread bets are priced at -110 on both sides, meaning you risk $110 to win $100. That extra $10 is the sportsbook’s commission (commonly called "vig" or "juice"). The standard 4.55% margin built into -110/-110 pricing is one reason why line shopping across multiple books is so important — even half a point of spread movement or a reduction from -110 to -105 can meaningfully improve your long-term results.
Buying points on the spread
Some sportsbooks allow you to "buy" points on the spread, paying a higher price (worse odds) in exchange for a more favorable spread number. For instance, you might move the Lakers from -6.5 to -5.5 by accepting -120 odds instead of -110. Whether buying points is worth it depends on the specific numbers involved. Key numbers in NFL betting (3, 7, 6, 10) are the most common margins of victory, so buying across them can have significant value. In the NBA, key numbers are less meaningful due to the higher scoring volume.
How spreads differ across sports
Spread betting is most popular in football (NFL and college) and basketball (NBA and college), where scoring differentials are large enough to create meaningful spreads. In lower-scoring sports like baseball, hockey, and soccer, spreads are typically fixed at small values (run line at 1.5, puck line at 1.5, or goal line at 0.5/1.0) with the odds adjusted instead. Understanding these differences helps you identify where analytical edges are most likely to appear.
Totals (over/under): betting on combined scoring
A totals bet, also known as an over/under, involves wagering on whether the combined score of both teams will go over or under a number set by the sportsbook. You do not need to pick a winner — you are only predicting scoring volume.
For example, if an NBA game has a total of 224.5, you can bet Over 224.5 (expecting the teams to combine for 225 or more points) or Under 224.5 (expecting 224 or fewer combined points). Like spread bets, totals are typically priced at -110 on both sides.
Totals markets are popular among analytical bettors because they can be modeled independently of which team wins. Weather data, pace of play statistics, defensive efficiency ratings, and injury reports that affect scoring volume all feed into accurate total predictions. Many professional bettors consider totals to be the most modelable and therefore the most exploitable market type.
Props and futures: a brief overview
Beyond the three core markets, sportsbooks offer two additional categories that are worth understanding.
Prop bets (propositions)
Props are bets on specific events within a game that do not necessarily relate to the final outcome. Examples include player props (will a quarterback throw over 2.5 touchdown passes?), team props (will a team score in the first quarter?), and game props (will the game go to overtime?). Prop markets often have wider margins and less sharp pricing, which can create opportunities for bettors with good models.
Futures
Futures are long-term bets on outcomes that will be decided weeks or months in the future, such as which team will win the Super Bowl, who will be the league MVP, or how many wins a team will have in a season. Futures typically carry much higher margins because the sportsbook is tying up capital and managing uncertainty over a longer period.
How market types affect edge detection
Not all markets are created equal when it comes to finding value. The efficiency of a market — how accurately the odds reflect true probabilities — depends on several factors: the volume of money wagered, the number of sharp bettors active in the market, the availability of relevant data, and how quickly the sportsbook adjusts to new information.
Moneyline markets on major events (NFL Sunday games, Champions League matches) tend to be the most efficient because they attract the highest volume and the sharpest action. Spread markets in lower-tier leagues, totals in sports with limited public data, and alternative spreads or totals across less popular sports often contain the widest inefficiencies. This is where data-driven bettors have the biggest advantage.
The key insight for analytical bettors is this: you do not need to find value in the most popular markets to be profitable. In fact, specializing in less efficient markets — whether that means niche sports, alternative totals, or early-week spreads — often produces better risk-adjusted returns than competing head-to-head with sharp syndicates on prime-time NFL spreads.
Which markets OddsLab covers
OddsLab scans odds across more than 21 sports and three core market types (moneyline, spreads, and totals) from dozens of sportsbooks worldwide. The platform calculates expected value for every available line, highlights the sharpest odds, and flags significant line movements in real time. Whether you are a beginner looking for your first value bet or a professional managing a portfolio across multiple sports, OddsLab gives you the tools to compare markets systematically.
The dashboard lets you filter by sport, market type, minimum edge, and time to event, so you can focus on exactly the opportunities that match your strategy. You can also track which market types are producing the best results for your betting portfolio over time, using OddsLab’s built-in performance analytics to identify where your edge is strongest.