Best MLB Sportsbook Promo Codes & Betting Bonuses

Best MLB Sports Betting Promo Codes

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.

Top 5 MLB Betting Promotions in March 2025

We've listed the top 5 MLB promo offers and explained how they work, so you'll know how to claim them and whether they're useful for you.

1. Caesars Sportsbook MLB Promo

Caesars Sportsbook is offering a great Double Your Winnings MLB betting promo, perfect for newer sports bettors ready to go in swinging. You can Bet $1, Get 10 100% Profit Boost Tokens if you sign up using our promo code WSNDYW.

With this baseball promo, all you have to do is bet $1 and you'll get rewarded with 10 100% profit boost tokens that can bring you up to $2,500 for each token.

When you join Caesars Sportsbook, you'll also gain access to their excellent rewards program. This program offers more than just additional promos and online benefits—it also provides discounts on dining, shopping, and more at Caesars Entertainment properties.

This offer is ideal for MLB fans looking to place their first bet with the peace of mind that comes with a second chance. Plus, the rewards program enhances your overall experience with extra perks, promos, and exclusive discounts.

» Read our Caesars Sportsbook review to find out more.

💰 Caesars Sportsbook NFL promo offer: Bet $1, Get 10 100% Profit Boost Tokens
🤩 Caesars Sportsbook NFL promo code: WSNDYW

Caesars Sportsbook Ratings

⭐ WSN rating: 4.3/5
⭐ Apple App Store: 4.6/5
⭐ Google Play Store: 4.3/5

Claim your Caesars MLB betting promo

2. FanDuel Sportsbook MLB Promo

FanDuel is pitching a fantastic promo for MLB fans: Bet $5, Get $150 in Bonus Bets if Your Bet Wins.

To claim FanDuel's MLB offer, simply step up to the plate, create an account, deposit at least $10, and place a $5 bet on any market. Whether your first bet wins or loses, you’ll hit a home run with $150 in bonus bets added to your account as soon as you place your first $5 bet. In my experience, the bonus bets arrived within minutes, but if there's a rain delay, it can take up to 72 hours for them to appear.

Once those bonus bets are in your account, you've got seven days to swing for the fences before they expire.

What I love about FanDuel's bonus bets is that they’re as flexible as a utility player. You’re not stuck with predetermined bonus bet packages like at other betting sites. Instead, you can use your bonus bets however you want. Whether you want to swing for the fences with a $150 bet or play it safe with 150 $1 bets, FanDuel gives you the freedom to play your way.

This promo is a great opportunity for MLB fans to come in with $5 and walk away with $150 in bonus bets, giving you plenty of chances to make your picks.

» Find out more in our detailed FanDuel review.

💰 FanDuel NFL promo offer: Bet $5, Get $150 in Bonus Bets if Your Bet Wins
🤩 FanDuel NFL promo code: No promo code required

FanDuel Ratings

⭐ WSN rating: 4.5/5
⭐ Apple App Store: 4.8/5
⭐ Google Play Store: 4.7/5

Claim your FanDuel MLB betting promo

3. bet365 Sportsbook MLB Promo

The British gambling company, bet365, entered the US market in 2018 and has since been a prime example of how Europeans approach gambling and promo offers. You can easily see for yourself why their offer is one of the best promos in the sports betting industry.

With that in mind, it's not surprising that bet365 has a great offer for MLB fans with a solid promo: . To get in on this promo, make sure to use the promo code WSN365 when signing up.

The promo offer is easy to claim. Simply deposit at least $10 and wager $5 on any market. Regardless of whether your qualifying bet wins or loses, you'll receive $150 in bonus bets.

The bonus bets come with a wagering requirement of 1x, which is fairly standard for sportsbooks, and have to be used within seven days on bets with odds of -500 or longer.

By using promo code WSN365, you can unlock this offer and get the most out of your MLB betting experience. With over two decades in the industry, bet365 continues to deliver top-tier promotions designed to keep bettors engaged

» Check out our bet365 review to read more.

💰 bet365 NFL promo offer: Bet $5, Get $150 in Bonus Bets Win or Lose
🤩 bet365 NFL promo code: WSN365

bet365 Ratings

⭐ WSN Rating: 4.5/5
⭐ Apple App Store: 4.7/5
⭐ Google Play Store: 4.6/5

Claim your bet365 MLB betting promo

4. BetMGM Sportsbook MLB Promo

BetMGM is currently offering a stellar promo for MLB fans. By signing up with the promo code WSNSPORTS, you could score up to $1,500 in bonus bets if your first wager doesn’t hit.

To claim this offer, you'll have to register, use promo code WSNSPORTS, deposit at least $10, and place a minimum $5 bet on any MLB game or other available sports markets. If your first bet strikes out, BetMGM will give you bonus bets equal to your wager.

The beauty of this promo is that the more you invest, the more bonus bets you stand to gain if your initial bet doesn’t win. If your first bet is successful, you won’t receive any bonus bets, but you’ll still walk away with your winnings. It’s essentially a win-win—you either get bonus bets or a winning payout.

But that’s not all: once you’re in the game with BetMGM, you’ll also gain access to one of the top loyalty programs in the sportsbook league.

The more you bet, the more reward points you accumulate, which translates into MVP-level perks like entertainment offers, room upgrades, and more. And that’s just the first inning.

This promo is perfect for sports betting beginners as it provides a safety net for your first bet, giving you added confidence to dive into the season’s games, and it's also good for seasoned bettors that want to go in big. With the potential for bonus bets if your initial wager doesn’t hit, you’ll stay in the game longer.

Plus, the perks from BetMGM’s loyalty program make it a top choice for committed bettors. If you appreciate being rewarded for your loyalty, this is the sportsbook for you.

» Get all the details in our BetMGM review.

💰 BetMGM NFL promo offer: Get Up to $1,500 in Bonus Bets
🤩 BetMGM NFL promo code: WSNSPORTS

BetMGM Ratings

⭐ WSN rating: 4.4/5
⭐ Apple App Store: 4.8/5
⭐ Google Play Store: 4.2/5

Claim your BetMGM MLB betting promo

5. BetRivers Sportsbook MLB Promo

BetRivers has been on the field since 2019, and they’ve really expanded their roster since then—not just in operations but also in their MLB promo offerings.

Currently, BetRivers’ MLB promo can score you up to $500 in bonus bets if you’re in IL, IN, LA, MD, MI, PA, or VA; up to $250 in CO and NJ; and up to $100 in AZ, IA, NY, OH, and WV. It’s a standard second-chance offer, though the value is a bit lower compared to other sportsbooks out there.

Even with a lower ceiling, this promo is perfect for those new to baseball betting. It gives you a chance to step up to the plate and take a few swings without committing too much, making BetRivers my top recommendation for beginners in MLB betting.

The site’s design is a bit old-school, which actually works to its advantage for newcomers. When you’re just starting out, you don’t need flashy graphics or a confusing layout throwing you off your game. That’s why I confidently recommend BetRivers as your go-to for a first sportsbook.

However, even though it’s beginner-friendly, you shouldn’t step into the batter's box without some prep work. Be sure to check out our learning hub before you start placing your MLB bets.

» Interested in more? Check out our detailed BetRivers review.

💰 BetRivers NFL promo offer: $100 Bonus Bet
🤩 BetRivers NFL promo code: No promo code required

BetRivers Ratings

⭐ WSN rating: 4.1/5
⭐ Apple App Store: 4.4/5
⭐ Google Play Store: 3.3/5

Claim your BetRivers MBL betting promo