When you sign-up through links on our site, we may earn an affiliate commission. Learn more >

Image for Richard Janvrin Richard Janvrin - Updated August 22, 2023

Best MLB Sportsbook Promo Codes & Betting Bonuses

Neon Bonus Mlb

America has been enjoying its favorite pastime since before the National League and the American Leagues were created in 1876 and 1903. One of the biggest changes to the game is that Americans in many states are now allowed to legally bet on it thanks to the Supreme Court PASPA ruling!

Check out below for the best Sportsbook Bonuses available from the top MLB betting sites available in the US! This page is updated continuously so check back during the season to see if any new offers have been added! Also, if you’re concerned about whether or not your state allows legal betting then check our Where Can I Bet on MLB Games Legally Guide.

Best Sportsbook Promo Codes for the MLB

SportsbookBonus OfferPromo Code
bet365Bet $1 and Get $365 in Bonus BetsWSN365
DraftKings SportsbookBet $5, Get $200 in Bonus Bets No Code Needed
Caesars SportsbookBet $50, Get $250 in Bonus BetsWSNGET
FanDuel SportsbookUp to $200 Back in Bonus Bets
No Code Needed
BetRivers Sportsbook$500 Free BetSPORTS 
PointsBet SportsbookGet 10 x $100 in Second Chance Bets
No Code Needed
Si SportsbookBet $20, Win $200SI200
BetMGM$1,500 First Bet OfferNo Code Needed
Unibet$100 Bonus BetNo Code Needed 


Welcome Offer - Bet $1 and Get $365 in Bonus Bets

Deposit required. Bonus Bets winnings are added to the Bonus Bets balance. Bonus Bet wager excluded from returns. T&Cs, time limits, and exclusions apply.

How it works:

  1. Sign up, make a deposit of $10 or more and then claim the offer.
  2. To activate your Bonus Bets, place a qualifying bet of $1 from your deposited funds.
  3. $365 in Bonus Bets will be added to your Bonus Bets balance once your bet is settled.
  4. To use them, simply select ‘Use Bonus Bets’ in the bet slip.

Baseball Early Payout Offer

Get your straight bets paid out if the team you back leads by 5 runs - for parlays the selection will be marked as a winner.



Bet $1 Get $365 in Bonus Bets

21+ | T&Cs, time limits & exclusions apply

DraftKings Sportsbook

Known for great customer service and their wide availability across the United States, DraftKings Sportsbook is or will be available soon in a state near you. Being one of the largest sportsbooks in the USA means that you can offer some of the best and biggest offers and bonus codes available on the market. Check out DraftKing’s current offers on this MLB season below!

DraftKings $1,000 Deposit Bonus

No promo code is needed to claim this welcome offer. Sign up at DraftKings through our links, make the first deposit of a minimum of $5 and you’ll be qualified to receive up to $1,000 in bonus funds in the form of site credits.

The bonus amount is equal to 20% of the deposit amount, not to exceed $1,000. For more details, head to DraftKings Sportsbook.

Win $200 in Bonus Bets

Make a deposit of just $5 or more into your account and place a wager of $5 or more on any pre-game moneyline. If your bet wins, you'll not only receive cash winnings from your original wager, but you'll also get an additional $200! 

MLB Stepped up SGP

Build your MLB Same Game Parlay and get up to a 100% Profit Boost!



Bet $5, Get $200 + $150 in No Sweat Bets

21+ | T&Cs apply

Caesars Sportsbook

Caesars Sportsbook is a perfect option for customers who want to combine casino games with sports betting.

Bet $50, Get $250 in Bonus Bets

Sign up at Caesars and get a $250 bonus! The amount will be split into $50 dollar increments with the first $50 coming immediately after the initial $50 dollar cash wager settles. Then, another $50 will enter your account on each of the next 4 Monday’s. You have to use each of the $50 you receive within 7 days. 

Use bonus code WSNGET at sign-up. 



$1,000 First Bet on Caesars

21+ | Terms and conditions apply

FanDuel Sportsbook

FanDuel offers a complete sports betting experience. The range of betting available is massive and the software is easy to use.

Bet $5, Get $200 in Bonus Bets

Get up to $200 back in bonus bets if you don't win your first bet! To claim, new users need to register, make a first-time deposit, and then simply place their first real-money wager on any FanDuel Sportsbook market that is live on the platform. This bonus is available in all FanDuel legal states.

Dinger Tuesdays

Place a Pre-Live, Straight, $25+ "To Hit a Home Run" Wager on any MLB Game and get a $5 bonus in bonus bets for each HR hit by both teams in the game (max $25 per game)

BetRivers Sportsbook $500 Free Bet

BetRivers’ welcome bonus for new members is a good one. Get up to a $500 free bet when you sign up with BetRivers! Make a $10 first deposit using our promo code ‘SPORTS’ 

If you are in New York, the bonus limit is up to $100.

SGP Weekly Bet and Get

Place 3 or more SGP of $10+ every week and get a $10 MLB bonus bet.

MLB Parlay Insurance

Simply place a 4+ leg MLB Parlay with each leg having odds of -500 or greater and a final parlay odds of +100 or greater. 

If exactly 1 leg loses, you will get your stake back up to $25! To qualify, your bet must contain a minimum of 3 winning selections.

Even if some selections within your bet become void, as long as the above requirements are met, your bet will still be eligible. Bets with two or more losing selections do not qualify.



$500 Free Bet

21+ | VA only | Gambling problem? Call 1-800-532-3500

PointsBet Sportsbook

PointsBet prides itself on covering a wide variety of sports as well as offering futures on all kinds of sports. Check out what PointsBet has in store for you by having a look at our PointsBet sportsbook review.

PointsBet Welcome Bonus

Get up to 10 x $100 Bet Credits if your first Fixed-Odds bet of the day loses (1 per day for 10 days).



10 x $100 Second Chance Bets

21+ | T&Cs apply

SI Sportsbook Bonuses Promo Code SI200

SI Sportsbook is available for sports bettors in Michigan and Virginia. Find great promotions and odds over at SI Sportsbook.

Bet $20 and Get $200 in Free Bets 

Get up to $200 in free bets when you deposit at SI Sportsbook. Just sign up through our links, make a deposit of $20 or more, and get $200 in free bets if your first bet loses.

BetMGM Bonuses

BetMGM Sportsbook is recognized as one of the big contenders in the sportsbook market today. The sportsbook offers an excellent range of rotating promotions and bonus offers so check back here frequently to see what has changed!

New Users Welcome Offer – $1,500 in Bonus Bets

New users to BetMGM can take advantage of the amazing $1,500 First Bet offer! 



Get $1,500 in Bonus Bets!

21+ | Terms and conditions apply

Unibet Promo Code

Unibet launched on the US online gambling market much later than the majority of sportsbooks, meaning the company has some catching up to do in terms of claiming a market share. A great way to attract customers is to lure them in with promotions and new player welcome offers.

Unibet Bonus $100 in Bonus Bets

Join Unibet Sportsbook and once you make your first deposit Unibet gives you your first cash bet, get up to $100 back if you don’t hit a winner.



$100 Second Chance Bet

Terms and conditions apply | 21+ | VA only

Bet $1 Get $365 in Bonus Bets

21+ | T&Cs, time limits & exclusions apply

Claim Now
Image for Richard Janvrin


Richard Janvrin

408 Articles

After graduating from the University of New Hampshire with a BA in Journalism, Richard Janvrin has been covering iGaming and sports betting since December 2018. Richard has covered betting at Bleacher Report, Gambling.com, The Game Day, Forbes, and more.

More info on Richard Janvrin
We've been featured on:
espn logo
reuters logo
cbs-news logo
forbes logo
entrepreneur logo
entrepreneur logo
We only list licensed sportsbooks

© Rebel Penguin ApS 2023 (a subsidiary of Gaming Innovation Group Inc.)

We support responsible gambling. 21+ Only. Gambling problem? Call 1-800-Gambler.

WSN.com is run by iGaming Cloud Inc (a Gaming Innovation Group Subsidiary) and is registered with the New Jersey Division of Gaming Enforcement (DGE) under affiliate vendor ID 89744, with the Indiana Gaming Commission (IGC) under certificate of registration number SWR-000148, approved by the Pennsylvania Gaming Control Board as a gaming service provider, under certificate registration number 117656-1, possesses a Vendor Minor sports betting license from the Colorado Limited Gaming Control Commission (account number 94414163), granted a vendor registration number VR007603-20-001 by the Michigan Gaming Control Board, an interim Sports Wagering Supplier license, under license number SWS 066, issued by the West Virginia Lottery Commission, a sports betting vendor registration, under registration number #100400, issued by the Director of Gaming Licensing and Investigations of the Virginia Lottery to operate in the State of Virginia, and a Vendor Registration issued by the Sports Wagering Committee of the Tennessee Education Lottery Corporation.

Advertising disclosure: WSN contains links to online retailers on its website. When people click on our affiliate links and make purchases, WSN earns a commission from our partners, including ESPN and various sportsbooks.