Let's look at the different types of gamblers that bet baseball odds.
Baseball odds are wagered on by many different groups of gamblers including fans. Don't for a minute think that there isn't a lot of fan money wagered in baseball odds. Baseball fans are incredibly loyal to their favorite teams, almost in a romantic sense, and they are basically blind to any baseball odds value questions.
Fans do not necessarily bet the most money on baseball but they certainly do account for a portion of the baseball betting lines, particularly with teams such as the New York Yankees, Boston Red Sox, Chicago Cubs, and, to a lesser degree, the Los Angeles Dodgers and St. Louis Cardinals. This also works in the opposite extreme as some fans will make wagers on baseball odds against teams that they hate.
Another group of gamblers that bet baseball odds is the square. This would describe the overwhelming majority of gamblers that bet baseball odds. These gamblers are into baseball betting lines in the sense of trying to actually figure out the baseball odds board and to win money but, unfortunately, they think in clichés and in the most typical terms.
The oddsmakers love “squares” because they are so easy to read, and incredibly reactive in nature. Even when a square will come up with his own formula or theory, it is based on the same tired old information that everyone else uses, which makes it prey to lacking any real board value.
The group of gamblers that the sportsbooks fear is the sharps. Baseball odds are not easy to make money against but the core group of sharps is the exception. Their secret is their ability to read the baseball odds in terms of value. They don't make overlays and they can sense trouble, which is through experience.
Those are the three basic groups of gamblers that wager against the baseball betting lines.