MLB Sports Betting Promos: Best Bets For Opening Day
Opening day is here, and there’s no better way to kick off the 2025 MLB season than with some of the biggest sportsbook bonuses of the year. Whether you’re backing your hometown team, tailing the defending champs, or firing off some underdog picks, sportsbooks are offering promotions to add extra value to your opening day wagers. With 14 games on the slate for Thursday and every team starting fresh, it’s the perfect time to jump in and boost your bankroll.
From marquee matchups like Brewers–Yankees in the Bronx to Blake Snell’s Dodgers debut, the action will be wall-to-wall across ESPN, MLB Network, and streaming platforms. With games spread throughout the day and evening, there’s a wide betting window — and these sportsbooks are giving new users a head start with welcome offers.
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DraftKings Opening Day Promo: Up To $1,250 In Bonuses
DraftKings is one of the go-to names in sports betting, and its opening day promo delivers serious value. New users can claim $200 in bonus bets with their first wager — just sign up, deposit, and place a $5 wager on any MLB game.
The sportsbook is also giving a $50 bonus bet for depositing and is matching deposits at 20% up to $1,000 in bonus funds.
DraftKings also backs up its strong promo with a smooth user experience and a wide range of baseball bets.
Bet $5 Get $200 in Bonus Bets
PLUS Get a $50 Bonus Bet on Deposit
PLUS up to $1,000 Deposit Bonus
Gambling Problem? Call 1-800-GAMBLER
Caesars Opening Day Promo: 10 100% Profit Boost Tokens
Caesars Sportsbook is coming in hot for opening day with 10 100% profit boosts to help you get off to a quick start with your MLB betting when you sign up using the code LINEUPSDYW.
This promo is ideal for those looking to boost their potential winnings on day one of the season. Caesars stacks up nicely with other promo options and same-game parlay options for baseball bettors.
- Stream NFL Games In-App for Free
- 21+ Gambling problem? Call 1-800-GAMBLER
- Use Promo Code: LINEUPSDYW
BetMGM Opening Day Bonus: Up To $1,500 Back If First Bet Loses
BetMGM is giving new users a reliable option to start strong with its first bet offer up to $1,500. Simply register using the promo code LINEUPS, deposit at least $10, and place your first bet on any MLB opening day game.
If that bet loses, you’ll receive a refund in bonus bets, up to $1,500. With a deep selection of MLB props, futures, and in-game betting options, BetMGM is a strong choice for opening day and beyond.
Up to $1,500 in Bonus Bets if Your First Bet Doesn't Win*
*Bonus Bets Expire in 7 Days. One New Customer Offer Only. Add’l terms. 21+. Gambling Problem? Call 1-800-GAMBLER
Use Bonus Code: LINEUPS
Bet365 Opening Day Bonus: Choose Between Two
Bet365 is offering a choose-your-own-adventure promo for opening day, giving users the flexibility to tailor their welcome bonus when they use the bonus code LINEUPSBET.
New users can either receive $150 in bonus bets with an initial wager of $5 or more, or they can go with the first-bet safety net, which returns up to $1,000 back in bonuses if your initial bet loses. No matter which you pick, you’ll have bonus funds ready to go for MLB’s return. Bet365 continues to earn praise for its live betting platform and user-friendly design, especially for baseball.
- Bet $5 Get $150 in Bonus Bets Win or Lose
- OR First Bet Safety Net up to $1,000
- 30% Extra on Same Game Parlay Profit
- T&Cs Apply. Gambling Problem? Call or text 1-800-GAMBLER 21+
- Use Bonus Code: LINEUPSBET
How To Claim MLB Opening Day Sportsbook Promos
Getting started with any of these offers is a simple process. Here’s what you can expect:
- Sign up: Choose your sportsbook, head to their website or app, and complete the registration process. Be sure to use any required promo codes when signing up.
- Deposit funds: Using an approved payment method, most promos require a minimum deposit, typically $5 or $10.
- Place your first bet: Place a qualifying wager — usually at least $5 — to activate the bonus with a bet on any MLB opening day matchup.
- Receive bonus bets: Depending on the promo, you’ll either receive bonus bets instantly (win or lose) or get your stake back in bonus bets if your first wager doesn’t hit for safety net-style promos.
MLB Opening Day Best Bets
Rangers First 5 Innings Team Total Over 1.5 (-125)
Texas has one of the most potent lineups in baseball, and it’s facing a Red Sox team starting Garrett Crochet in his opening day debut. The Rangers averaged over two runs in the first five innings last year and return an even deeper batting order. This number should be 2.5 — there’s value at 1.5.
Paul Skenes Over 6.5 Strikeouts (-135)
Skenes draws the Marlins, a team full of high-K hitters and no elite bats. He’s cleared this number in nearly 70% of matchups against strikeout-prone lineups and enters 2025 with elite projections. This line opened too low — expect it to move up quickly.
Orioles ML (-115) vs. Blue Jays
Baltimore has the more reliable bullpen and a lineup that can still produce without Gunnar Henderson. Toronto’s José Berríos no longer scares anyone, and Zac Eflin has the edge in control and command. We’re backing the birds — the black and orange birds, that is — on opening day.
