MLB Opening Day is in the books, but it’s not too late to cash in on the best MLB betting promos from top sportsbooks. Whether you're betting on your team to win, targeting player props, or building a long-term MLB betting strategy, these welcome offers provide thousands in bonus value just for signing up and placing your first wager.
New users can claim promos that include bonus bets, first-bet insurance, and deposit matches—perfect for Opening Weekend. These MLB betting promos can be used on any wager type, including moneylines, totals, run lines, and MLB player props, giving you flexibility to bet however you want.
Sign up now using the MLB betting promos below to get started with today’s MLB odds. Then check out our expert MLB predictions, top picks, and a full breakdown of today’s starting pitchers to help build your bet slip.
Browse the chart below to find the best MLB betting promos for your betting style and stay tuned for more betting insights all season long.
| Top MLB Sportsbooks | MLB Betting Promos for Opening Weekend | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click Here |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Caesars Sportsbook | Get 10 100% Profit Boost Tokens | ACTION4DYW |
MLB Opening Weekend Betting Promos, Player Props and Starting Pitchers
The MLB season is still young and if you've gotten off to a slow start betting on moneyline and total, our daily MLB player props are the answer to building your bankroll. Take advantage of the MLB betting promos below, and secure bonus value by making player prop bets.
1. bet365
- bet365 Bonus Code: TOPACTION
- bet365 Promo: $1,000 First Bet Safety Net or Bet $5, Get $150 in Bonus Bets, Win or Lose
- bet365 PA Promo: Bet $5, Get $150 in Bonus Bets + 50 Casino Spins, Win or Lose
- bet365 States Available: AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, PA, TN, VA
Sign up with the bet365 bonus code TOPACTION to unlock two valuable MLB betting promos—choose between a bet $5, get $150 in bonus bets offer (win or lose) or a $1,000 First Bet Safety Net that refunds your first wager in bonus bets if it loses, up to $1,000.
These bet365 sign-up offers give you flexible options to start betting with confidence during Opening Weekend. Whether you're placing wagers on moneylines, run lines, totals, or diving into MLB player props, these promos give you extra value no matter how you bet.
2. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Click Here
- Fanatics Sportsbook Bet-and-Get Promo: Bet $30, Get $300 in Bonus Bets
- Fanatics Sportsbook Sign-Up Bonus: $1,000 in No Sweat Bets
- Fanatics Sportsbook NY Sign-Up Bonus: 300% Profit Boost Token
- Fanatics Sportsbook States Available: AZ, CO, CT, DC, IA, IN, KS, KY, LA, MA, MD, MI, NJ, OH, PA, TN, VA, VT, WV, WY
Fanatics Sportsbook is offering several MLB betting promos to help you start the season strong, including one of the most generous sign-up bonuses available. With any Fanatics Sportsbook promo, you can use your bonus funds on moneylines, totals, run lines, or even player props—giving you maximum flexibility during MLB Opening Weekend.
Fanatics Sportsbook’s most popular offer gives new users $300 in bonus bets across their first three days on the platform.
Here’s how it works:
- Place a $10+ wager each day for three consecutive days
- After each bet settles, receive $100 in bonus bets
- That’s up to $300 in bonus funds to use on any MLB betting market, including player props
For added protection, Fanatics Sportsbook also offers up to $1,000 in No Sweat Bets. If your qualifying wager loses, you receive up to $100 back in bonus bets per day for 10 straight days. This is especially helpful early in the season, when unpredictability is high and a safety net gives you more confidence in your picks.
If you’re located in New York, Fanatics Sportsbook also gives you access to an exclusive 300% Profit Boost Token.
Here’s how it works:
- Sign up and place a wager up to $50 on any MLB market
- If your bet wins, your profit is tripled for a major payout boost
3. BetMGM
- BetMGM Bonus Code: ACTIONGET
- BetMGM Promo: Bet $10, Get $150 in Bonus Bets if You Win
- BetMGM Bonus Code: TOPTAN1600
- BetMGM Promo: 20% First Deposit Match, Up to $1,600 in Sports Bonus
- BetMGM Bonus Code: TOPACTION
- BetMGM Promo: $1,500 First Bet Offer
- BetMGM States Available: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY
If you’re looking to boost your MLB bankroll this weekend, BetMGM Sportsbook has three versatile MLB betting promos available—each tailored to your betting style and preferred approach, whether you're wagering on player props, totals, run lines, or moneylines.
Sign up with BetMGM bonus code ACTIONGET and place a $10+ first wager on any MLB market. If your first bet wins, you receive $150 in bonus bets. This low-risk promo is available to new users in CO, MI, NJ, PA, and WV, making it an ideal way to start your MLB betting journey with a potential payout boost.
Prefer to load up your account and spread out your bets? BetMGM bonus code TOPTAN1600 unlocks a 20% deposit match up to $1,600 in bonus funds. Available in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY, this offer is perfect for bettors who want the flexibility to place wagers across multiple markets, including MLB player props.
Planning to make a large Opening Weekend bet? Register with BetMGM bonus code TOPACTION to access the First Bet Safety Net, which refunds your first bet in bonus bets—up to $1,500—if it loses. This offer is available in AZ, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, and WY. The refund is split into five equal bonus bet tokens, offering more opportunities to stay in the game even if your first wager doesn’t hit.
4. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Welcome Bonus: Bet $1, Get 10 100% Profit Boost Tokens
- Caesars Sportsbook States Available: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY
Doubling your profits during MLB Opening Weekend is easy with one of the top MLB betting promos available from Caesars Sportsbook. When you sign up using Caesars Sportsbook promo codeACTION4DYW, you instantly receive 10 Profit Boost Tokens after placing a $1 first bet on any MLB market.
Here’s how to claim and use the offer:
- Register with Caesars Sportsbook promo code ACTION4DYW
- Place a $1+ first bet on any MLB wager, including player props, run lines, or moneylines
- Instantly unlock 10 Profit Boost Tokens, each applicable to bets up to $25
- Double your profits on any winning bet with a Profit Boost applied
Whether you’re backing a team outright or targeting a player to record a hit, home run, or strikeout total, these Profit Boost Tokens offer a flexible way to increase your payout on any MLB bet type.
Just remember, the tokens expire 14 days after they’re credited, so be sure to take full advantage while Opening Weekend action is in full swing.
Alternate MLB Betting Promos for Opening Weekend
You don’t have to stick with traditional sportsbooks to enjoy betting on MLB this weekend. Platforms like Kalshi and Underdog Fantasy provide fresh, engaging ways to get involved. From market-style trades to daily fantasy pick’em contests with MLB’s biggest names.
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Welcome Offer: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: 48 + Washington D.C. (Not available in New Jersey and Nevada)
Kalshi gives MLB fans a futures-style way to interact with the game. Instead of placing traditional bets, you trade on yes-or-no outcomes like “ AL East Winner?” or “ NL MVP Winner” The platform blends data and prediction in a clean, simple format that feels more like a stock market than a sportsbook.
Steps to claim your Kalshi bonus:
- Sign up using Kalshi promo code ACTION
- Make $100 worth of trades on any Kalshi market
- Receive a $10 bonus to keep trading and exploring
2. Underdog (DFS)
- Underdog Fantasy Promo Code: TOPACTION
- Underdog Fantasy Sign-Up Offer: 50% Deposit Match, Up to $1,000 in Bonus Funds
- Underdog Fantasy States Available: AL, AK, AZ, AR, CA, DC, DE, GA, IL, KS, KY, MA, MN, MO, NE, NM, NC, ND, OK, OR, RI, SC, SD, TN, TX, UT, VT, VA, WI, WV, WY
Underdog Fantasy is the go-to for quick and simple MLB daily fantasy action. You can draft against others or build pick’em entries based on player props—like total bases for Juan Soto or strikeouts for Corbin Burnes.
Use Underdog Fantasy promo code TOPACTION to receive a 50% deposit match on your first deposit, up to $1,000. Whether you're just getting started or already a DFS pro, this promo gives you more shots to win during MLB’s Opening Weekend and beyond.
Top MLB Player Prop Bets for March 30
We've run through the best MLB betting promos. Now, it's time to put them into action and you can do so this afternoon with MLB player prop bets. When it comes to betting play props in baseball, you have tons of options to choose from.
However, below are three of our top MLB player prop picks for today's slate to help narrow down your betting card.
- Marcus Stroman under 3.5 strikeouts (+115, bet365)
- Mitchell Parker under 4.5 strikeouts (- 110, BetMGM)
- Tanner Bibee under 16.5 outs (-105, BetMGM)