MLB Betting Promos – Best Baseball Betting Bonuses

Over the 162-game Major League Baseball season (plus playoffs), online sportsbooks offer MLB betting promos to attract new bettors and keep regular MLB bettors busy.

Here are the current sign-up promos at the best MLB betting sites, plus what you can expect for their ongoing MLB promos.

Best MLB sportsbook promos and offers

Sportsbook Promotion/Offer Promo Code
Caesars Sportsbook Up to a $1,000 first bet NEWS1000
BetMGM Sportsbook Up to $1,500 in bonus bets if first bet loses  SPORTSPICK
BetRivers Sportsbook Second-chance bet up to $500 SPORTSRIV
FanDuel Sportsbook Bet $5, get $150 in bonus bets Use Link
DraftKings Sportsbook Up to $1,250 in bonuses Use Link

Top 5 MLB betting sites & promos

Here are our picks for the top MLB promotions at major sportsbooks.

1. Caesars Sportsbook

Caesars is an instantly recognizable name in the sports betting industry, and for good reason. It’s been an online sportsbook since 2018, when sports betting first became legal, and it has become known for offering some of the best welcome bonuses. 

2. BetMGM Sportsbook

BetMGM is another major player in the world of sports betting and offers a good selection of betting markets for every major sport, including Major League Baseball. The ‘edit my bet’ feature is a real standout at BetMGM.

3. BetRivers Sportsbook

If you’re looking for a sportsbook that offers a large menu of sports and betting options, then BetRivers fits the bill. Customers will also find a large selection of MLB prop odds and alternate lines to consider. What’s more, the iRush Rewards program provides good value.

4. FanDuel Sportsbook

FanDuel is a clear contender for one of the top online sports betting apps in the US, offering a nice variety of bets, promos, and odds boosts, as well as welcome bonuses for new customers. With its user-friendly app, FanDuel is a market leader in nearly every state where online sports betting is legal.

5. DraftKings Sportsbook

One of the most recognizable US sports betting sites, DraftKings offers a smooth betting experience and a wide variety of betting promos for all major sports, including MLB. 


Types of MLB sportsbook welcome promos explained

Sportsbooks give away sports betting promos and bonuses to drive new business to their platforms. Below, we explain the most common styles of sign-up bonuses. 

  • Match Deposit Bonus: Your initial deposit is matched by the sportsbook with bonus funds up to a defined limit. 
  • No Deposit Bonus: This promo gives you bonus funds simply for creating a new account, with no deposit needed.
  • Bet Insurance: You can place your bet without risk up to a specified limit.
  • Free Bets: A free bet welcome bonus is very similar to a no deposit bonus and provides you with credit for betting. 

Always read through the terms and conditions for any welcome bonus so you’re aware of the requirements before accepting any promotion from any of the best online sports betting sites.

MLB betting markets at legal sportsbooks

Here are the most common and popular baseball betting lines at US sports betting sites. 

  • MLB run line: Akin to the point spread in other sports, the run line in baseball is always the same number: -1.5 and +1.5. Betting on the -1.5 means you believe that team will win by two runs or more. Betting on the positive means you think the underdog will either lose by one run or win the game outright. 
  • MLB moneyline: Simply choose which team you believe will win the game. Positive odds indicate the underdog, and negative odds indicate the favorite. 
  • MLB totals: These are over/under bets that depend on the combined score of both teams in the game. Oddsmakers set a total number of runs, and you decide if the teams will score over or under that predicted total. 
  • MLB player props: These are proposition bets focused on individual player performances during a game. Some examples of common MLB player props include hitter props, pitcher props, and head-to-head player props.
  • MLB team props: These focus on team statistical achievements or events that happen during a game (not the game outcome itself). Some examples of MLB team prop bets include the team to score first, total runs, the first team to reach a certain number of runs, and the combination of total hits, runs, and errors.
  • MLB futures: These bets are long-term events, usually settled at the end of the MLB season. Some examples of MLB futures odds include World Series winner odds, National and American League pennant winners, division winners, regular-season win totals, and player awards such as MVP, Rookie of the Year, and the Cy Young. 

How to use an MLB sportsbook promo code 

Applying a sports betting promo or bonus code to your account is a simple and straightforward process that sometimes doesn’t require you to do anything at all. There are two ways these codes are usually applied to your account: 

Enter the promo code during sign-up: When you are registering for an account at a sportsbook, there is usually a field for applying the promo code. Enter the code there, and it should take effect. 

Promo code auto-fills after you click a link: In some cases, you won’t need to supply the code, even if one is required by the site. It might auto-fill the field for you once you’ve clicked a link from our site. If a code is provided but doesn’t automatically show up on the registration form, you’ll need to input it yourself with a copy and paste.

Always take the time to read through the requirements of any promo you’re planning on applying to your account. All of the important details, such as playthrough and other betting requirements, are listed in the bonus’ terms and conditions.

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