Betting on Bases: Most Popular Baseball Wagers and Key Stats

Wed, Jun 3, 2026
by CapperTek

180 years after the first official game between The Knickerbockers and the New York Nine, Baseball remains entrenched as the US National pastime. It has also taken up permanent residence on the list of the biggest US betting sports. Betting on home runs attracts interest from die-hard fans and punters more accustomed to assessing the best football betting offers ahead of the 2026 FIFA World Cup.

 

With a mammoth 162-game season, baseball is rarely out of the sports news between February and October. 2,400 games per season present sports fans with a sea of betting opportunities. But what are baseball punters betting on? And what are the key stats to bear in mind when analysing a game?

 

Baseball: Most Popular Bets

  • Moneyline: The most common of the baseball bets, this is simply a bet on which team will win the game.
  • Run Line: This is the baseball equivalent of a point spread or handicap. In Run Line betting, the underdog receives a theoretical head start expressed as a number of runs. An example of a Run Line bet could be New York Yankees -1.5, Boston Red Sox +1.5. In this example, a bet on the Yankees -1.50 will only win if they win the game by two or more runs. A bet on the Red Sox will win if they win the game or lose by a single run.
  • Over/Under (Totals): Here we are betting on whether the total runs scored will be over or under a specified amount, e.g. over or under 8.5. In this example, a bet on under will win if there are eight or fewer runs, and a bet on over will win if there are nine or more. You may bet over/under on the combined runs scored by both teams or a by single team.
  • First 5 Innings Bets: Many online betting sites offer Moneyline, Run Line, and Over/Unders on the first five innings of a game. Many baseball punters prefer first five innings bets as it limits the bullpen uncertainty of the latter part of the game. By focusing solely on the starting pitchers, First 5 or F5 punters feel they have a more accurate picture of what they are actually betting on.
  • In-Play Betting: The above markets and more are available to bet on in-play once the game begins. Baseball is also a natural setting for the booming area of in-play micro bets, such as the result of the next pitch or the next at-bat.
  • Player Prop Bets: In addition to match outcome and totals markets, you can also focus on individual players. Commonly available player prop bets include:
  • Player to hit a home run
  • Over/Under strikeouts
  • Player total hits
  • Player total bases
  • And Player Runs Batted In (RBI)

 

  • Futures: Away from the match markets, several longer-term “futures” bets are popular with punters, particularly before the season begins in February. Examples include:
  • World Series Winner
  • Division Winner
  • MVP Winner
  • Cy Young Award Winner

 

Baseball Key Stats

Traditional stats such as ERA, Batting Average, and RBIs still have a place in baseball analysis. However, many smart bettors focus more on the following metrics:

  • xFIP (Expected Fielding Independent Pitching: This stat focuses on strikeouts, walks, and home runs, and is one of the best guides to a pitcher’s true skill level. xFIP is a key tool when weighing up Moneyline, Run Line, and Totals wagers.
  • K% (Strikeout Rate): This is simply the percentage of batters faced that a pitcher strikes out. The higher the percentage, the more dominant the pitcher. Season to season, this is often the most stable of the pitching stats and a good indication of inherent ability. This stat can be influential in totals and prop decisions.
  • BB% (Walk Rate): The other side of the K% coin, this is the percentage of batters faced that a pitcher walks. A high BB% is related to a higher run rate, bullpen pressure, and late-game scoring.
  • wOBA (Weighted On-Base Average): By accurately weighting singles, doubles, triples, and Home Runs, this hitting metric is more highly valued than batting average by shrewd bettors.
  • Hard Hit Rate / Barrel Rate: This measures how frequently a batter hits the ball cleanly and squarely, rather than a scuffed or sliced hit. Higher hard hit rates are more conducive to Home Runs, Base Hits, and Total Runs.