MLB Betting Promos: Score Over $4K in Sign-Up Bonuses for Futures Bets and More

With the MLB season right around the corner, the top sportsbooks are unveiling some of the best MLB betting promos to give bettors a head start on the action. Whether you’re placing an early wager on MLB futures like the World Series, MVP, or Cy Young or betting on daily matchups, these sign-up offers provide bonus bets, bet protection, and profit boosts to maximize your winnings all season long.

For those looking to back a World Series contender, powerhouse teams like the Los Angeles Dodgers, New York Yankees, and Atlanta Braves are leading the odds boards. If you prefer a longshot pick, squads like the Seattle Mariners, Arizona Diamondbacks, and Texas Rangers offer big payouts for bettors looking to take advantage of early-season value.

With over $4,000 in bonus funds available from the best MLB sportsbooks, now is the ideal time to claim these MLB betting promos and lock in your futures bets, Opening Day wagers, or even Spring Training game picks.

Best MLB Betting Promos

1. bet365 Sportsbook

• bet365 Bonus Code: TOPACTION
  • $1,000 First Bet Safety Net or Bet $5, Get $150, Win or Lose
  • Exclusive PA Offer: Bet $5, Get $150 in Bonus Bets + 50 Casino Spins, Win or Lose
• bet365 Sportsbook States: AZ, CO, IA, IN, KY, LA, NC, NJ, OH, PA, VA

The bet365 bonus code TOPACTION unlocks some of the best MLB betting promos, giving new users the flexibility to choose the promotion that best aligns with their betting approach. Whether you’re looking for a high-stakes safety net or a low-risk bet with guaranteed rewards, these bet365 sign-up offers provide extra value to fuel your MLB wagers all season long.

New users can select between two exclusive welcome offers, each designed to enhance your MLB betting experience:

For those who prefer placing a larger first bet with added security, the First Bet Safety Net ensures you won’t walk away empty-handed. If your first bet doesn’t win, bet365 refunds your full stake in bonus bets, up to $1,000.

This promo is ideal for confident bettors looking to back a favorite in an Opening Day matchup or take an early swing on MLB futures bets like the World Series winner, MVP, or Cy Young Award recipient.

How the First Bet Safety Net works:

• Sign up with bet365 bonus code TOPACTION and make a minimum $10 deposit.
• Place your first wager on any MLB market (-500 odds or longer).
• If your bet wins: Collect your full payout in cash.
• If your bet loses: Receive bonus bets equal to your stake, up to $1,000.

For a low-risk, high-reward start, bet365 also offers a Bet & Get promo, giving new users $150 in bonus bets just for placing a $5 first wager.

Unlike the First Bet Safety Net, this promo guarantees bonus bets regardless of whether your first wager wins or loses. It’s the perfect way to build a MLB bankroll without making a large upfront investment.

How to get $150 in bonus bets, win or lose:

• Register with bet365 bonus code TOPACTION.
• Deposit at least $10 into your account.
• Place a $5+ first bet on any eligible MLB market (-500 odds or longer).
• Win or lose, receive $150 in bonus bets once your wager settles.

This promo is a great option for those looking to spread their bonus bets across multiple MLB games, player props, or parlays.

Bettors in Pennsylvania receive an enhanced version of the Bet & Get promo. By signing up with bet365 bonus code TOPACTION, new PA users receive:

• $150 in bonus bets
• 50 spins for bet365 Casino, adding extra entertainment beyond sports betting.

2. BetMGM Sportsbook

• BetMGM Bonus Code TOPTAN1600: 20% Deposit Match, Up to $1,600
• BetMGM Bonus Code TOPACTION Get Up to $1,500 Back in Bonus Bets If Your First Bet Doesn't Win
• BetMGM Available States: AZ, CO, DC, IL, IN, IA, KS, KY, LA, MA, MD, MI, NJ, NC, OH, PA, TN, VA, WV, WY

BetMGM Sportsbook is offering some of the best MLB betting promos, providing new users with multiple welcome bonus options to kick off the baseball season. Whether you’re looking to secure a deposit match to extend your bankroll or prefer the safety of a first bet offer, a BetMGM bonus code delivers excellent value for MLB betting.

For those planning to spread their wagers across MLB futures, daily matchups, and player props, BetMGM’s deposit match promo gives you a 20% bonus on your first deposit, up to $1,600.

This promo is ideal for long-term bettors, as it allows you to gradually use bonus funds throughout the MLB season on moneylines, run lines, totals, and prop bets.

How to Claim the Deposit Match Bonus:

• Sign up with BetMGM bonus code TOPTAN1600 in eligible states: AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, WY.
• Deposit at least $10 into your BetMGM account.
• Receive a 20% deposit match in bonus funds, up to $1,600.
• Meet a 10x rollover requirement before withdrawing any winnings.

For example, if you deposit $1,000, BetMGM credits your account with $200 in bonus funds, which you can use to bet on MLB games throughout the season.

If you’re looking to place a bigger first wager with added security, BetMGM’s First Bet Offer gives you a second chance if your opening bet doesn’t hit. If your bet wins, you receive your full payout in cash. If your bet loses, BetMGM refunds your entire stake in bonus bets, up to $1,500.

This offer is perfect for MLB bettors looking to take a shot on an underdog or futures bet, knowing they’ll get bonus bets back if their first pick doesn’t win.

How to Claim the First Bet Offer:

• Register using BetMGM bonus code TOPACTION.
• Deposit at least $10 into your account.
• Place your first bet on any MLB market (-500 odds or longer).
• If your bet wins: Collect your full payout as cash.
• If your bet loses: Receive bonus bets equal to your stake, up to $1,500, split into five equal credits.

For instance, if you place a $500 first bet on the Yankees to win and they don’t, BetMGM refunds your $500 stake in five $100 bonus bets, allowing you to continue betting on MLB games.

3. Caesars Sportsbook

• Caesars Sportsbook Promo Code ACTION4BG1: Bet $1, Get $150 in Bonus Bets If You Win
• Caesars Sportsbook Promo Code ACTION4DYW: Bet $1+, Get 10 100% Profit Boost Tokens
• Caesars Sportsbook States:AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY

MLB betting promos are heating up as the season gets underway, and Caesars Sportsbook is rolling out some of the best offers for new users. Whether you're backing a World Series contender or taking a shot on an underdog, these sign-up promotions provide extra value for every type of bettor.

New users who sign up with Caesars Sportsbook promo code ACTION4BG1 can Bet $1 and Get $150 in Bonus Bets if Their Wager Wins, making it one of the best MLB betting promos available to start the season.

For those looking to boost their potential winnings, Caesars Sportsbook promo code ACTION4DYW offers 10 Profit Boost Tokens on your first bet, giving you a chance to increase payouts on your MLB wagers. Whether you're betting on moneylines, run lines, or player props, these tokens provide extra earning potential throughout the baseball season.

4. Fanatics Sportsbook

• Fanatics Sportsbook Promo: Claim Here
  • Bet and Get Up to $1,000 in No Sweat Bets
  • Sign Up and Get a 300% Profit Boost Token
  • Bet $30, Get $300 in Bonus Bets
• Fanatics Sportsbook States: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

Fanatics Sportsbook presents multiple welcome offers with the Fanatics Sportsbook promo, depending on the state you sign up in. Whether you’re looking for guaranteed bonus bets or No Sweat Bets, these MLB betting promos provide exceptional value for baseball fans.

Bettors in Arizona, Michigan, New Jersey, and Pennsylvania can unlock a $300 bet-and-get promo. This exclusive offer delivers $100 in bonus bets over three consecutive days.

• Place a $10+ wager on any MLB betting market with odds of -500 or longer each day.
• Receive $100 in bonus bets daily for the first three days after you sign up, win or lose.

Bettors in AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, and WY can access $1,000 in No Sweat Bets spread across 10 days. Place a No Sweat Bet on any MLB game, and if your wager loses, Fanatics Sportsbook refunds the amount in bonus bets, up to $100 per day.

Fanatics Sportsbook also offers an exclusive MLB betting promo in New York:

• New York: Sign Up and Get a 300 % Profit Boost Token – A 300 % Profit Boost Token is awarded for your first bet, which has to be a minimum of $50.

This exclusive promo provides extra value for MLB bettors in NY, helping them build a bankroll while wagering on baseball’s biggest games.

Alternative MLB Betting Promos: DFS and Social Sportsbooks

For those in states where MLB betting promos aren’t yet available, Daily Fantasy Sports (DFS) platforms and social sportsbooks provide exciting alternative ways to stay engaged throughout the season. These options allow you to wager on player performances, team-based contests, and virtual currency predictions—all without traditional moneylines and spread bets.

1. Underdog Fantasy (DFS)

• Underdog Fantasy Promo Code: TOPACTION
• Underdog Fantasy Welcome Offer: 50% Deposit Match, Up to $1,000 in Bonus Funds
• Underdog Fantasy States: AK, AL, AR, CA, DC, GA, IL, IN, KS, ME, MN, MS, NC, ND, NE, NM, NY, OK, OR, RI, SC, SD, TX, UT, VA, VT, WI, WY

Underdog Fantasy offers a DFS-style experience where users make “Higher” or “Lower” picks on individual player stats such as home runs, RBIs, and strikeouts. New users who sign up with the Underdog Fantasy promo code TOPACTION receive a 50% deposit match, up to $1,000 in bonus funds.

For example, you could build an MLB lineup for Opening Day that looks like this:

• Aaron Judge – Higher than 1.5 total bases
• Paul Skenes – Lower than 8.5 strikeouts
• Juan Soto – Lower than 2.5 hits + runs + RBI

2. Fliff Social Sportsbook

• Fliff Promo Code: ACTION
• Fliff Sign-Up Bonus: Spend $50, Get $100 in Fliff Coins
• Fliff States: AK, AZ, AR, CA, CO, CT, DC, DE, FL, IL, IN, IA, KS, KY, ME, MD, MA, MI, MO, MT, NE, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SD, TX, UT, VT, VA, WV, WI

Fliff Social Sportsbook allows users to make picks with Fliff Coins instead of real money, creating a fun and interactive way to engage with MLB betting markets. With the Fliff promo code ACTION, new users receive $100 in Fliff Coins after spending $50.