Thursday’s MLB slate features just five games, including two exciting matchups: the Red Sox vs. Orioles at 1:05 p.m. ET and the Arizona Diamondbacks vs. New York Yankees at 7:05 p.m. ET. While the day is light on games, there’s still plenty of action to be had, and you can get in on the excitement with top MLB betting promos from leading sportsbooks.
Whether you're betting on the early Red Sox vs. Orioles game or taking a later position on the Diamondbacks vs. Yankees, these MLB betting promos offer significant value for new users who sign up and place their first bet. From moneyline bets to player props like total bases for players using torpedo bats or strikeouts, these promotions provide extra value on a wide range of MLB markets.
Welcome bonuses include bet-and-get offers, first-bet protection, and deposit matches—perfect for boosting your bankroll as the season continues. Use these offers to bet confidently on your favorite teams or dive into advanced player props and alternate lines.
Sign up today with any of the MLB betting promos below and start betting on Thursday’s MLB odds. Don’t forget to check out our MLB predictions, expert picks, and player prop recommendations to enhance your strategy.
Review the chart below to pick from the best MLB betting promos, and keep reading for expert insights to help you build your bankroll.
| Top MLB Sportsbooks | MLB Betting Promos | 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 Betting Promos, Predictions, and Starting Pitchers for April 3
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
You can join the action by signing up with the bet365 bonus code TOPACTION and choosing between two of the best MLB betting promos: a bet $5, get $150 in bonus bets offer that pays out whether your bet wins or loses, or a $1,000 First Bet Safety Net that refunds your first wager in bonus bets if it doesn’t hit.
For those in Pennsylvania, the $150 bet-and-get promo comes with an extra bonus. PA users who sign up with the bet365 bonus code TOPACTION also receive 50 spins for bet365 Casino along with their bonus bets.
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
If you’re planning to bet on today’s action, Fanatics Sportsbook has several Fanatics Sportsbook promo offers to build your bankroll and bet on MLB all season long.
One of the top MLB betting promos is Fanatics Sportsbook’s $300 bonus bet offer, which is spread across your first three days on the platform.
Here’s how it works:
- Place a $10+ wager each day for three consecutive days
- Receive $100 in bonus bets after each wager settles
- That’s up to $300 in bonus bets to use on MLB markets, including moneylines, props, and run totals
Want some protection from bullpen blowups? Fanatics Sportsbook also offers up to $1,000 in No Sweat Bets, which refund your stake in bonus bets—up to $100 per day—if your qualifying wager loses. This No Sweat Bets promo runs for 10 consecutive days, giving you security as you dive into early-season MLB betting.
If you’re betting in New York, Fanatics Sportsbook has something extra: a 300% Profit Boost Token on your first MLB wager. Here’s how it works:
- Sign up and place a wager up to $50 on any MLB game
- If your pick wins, your profit is tripled, giving you a big 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 wager on today's slate, BetMGM Sportsbook has three flexible MLB betting promos to help you get started, so you can choose the one that fits your starting bankroll.
You can start with as little as $10 when you sign up with the BetMGM bonus code ACTIONGET: Place a $10+ first wager on any MLB market, and if your bet wins, you receive $150 in bonus bets. It’s one of the top offers for new users in CO, MI, NJ, PA, and WV.
If you want more bonus funds, use the BetMGM bonus code TOPTAN1600. This offer provides 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. Any deposit of $10 or more qualifies, though you need to deposit $8,000 to receive the full bonus.
For those who want to start with one big bet, the BetMGM first bet offer could be the right fit. Use the BetMGM bonus code TOPACTION and receive up to $1,500 back in bonus bets if your first wager loses.
This promo is available in AZ, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, and WY. If your wager doesn’t hit, you receive your refund in the form of five equal bonus bet tokens, giving you multiple chances to bounce back and win.
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
If you're looking to make the most of today’s action, Caesars Sportsbook has an exciting offer to help you double your winnings.
New users who sign up with Caesars Sportsbook promo code ACTION4DYW can place a $1 first wager to instantly receive 10 Profit Boost Tokens—one of the top MLB betting promos available.
Here’s how to unlock your Profit Boost Tokens and use them today:
- Register using Caesars Sportsbook promo code ACTION4DYW
- Place a $1 first bet on any MLB market
- Instantly receive 10 Profit Boost Tokens
- Apply each token to bets up to $25 to double your profit on any win
These Profit Boost Tokens are ideal for any MLB wager, including moneylines, run lines, or player props—perfect for today’s games. Just remember that you must use all tokens within 14 days of activation.
Alternative MLB Betting Promos
While traditional sportsbooks offer great sign-up promos, there are also alternative platforms like Kalshi and Underdog that provide fun, unique ways to engage with today’s matchups. Whether you're trading game outcomes or building daily fantasy pick’em slips with MLB stars, these options are excellent complements to the top MLB betting promos available.
1. Kalshi Predictive Market
- Kalshi Promo Code: ACTION
- Kalshi Welcome Offer: Make $100 in Trades, Get $10 Sign-Up Bonus
- Kalshi States Available: 46 States + Washington D.C. (Not available in Illinois, New Jersey, Nevada, and Ohio)
Kalshi offers MLB fans a unique way to get involved with the action through futures-style trading. On a busy day like today, with games starting early and continuing throughout the afternoon, users can trade on yes-or-no outcomes, making it feel more like a stock exchange than a traditional sportsbook.
How to claim your Kalshi bonus:
- Sign up using theKalshi promo codeACTION
- Make $100 worth of trades on any Kalshi market
- Receive a $10 bonus to continue trading and exploring
2. Underdog (DFS)
- Underdog Promo Code: TOPACTION
- Underdog Sign-Up Offer: 50% Deposit Match, Up to $1,000 in Bonus Funds
- Underdog 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
Use Underdog promo code TOPACTION when you sign up and receive a 50% match on your first deposit—up to $1,000. This gives you more opportunities to win big as you participate in today’s full slate of games and beyond.
MLB Starting Pitchers & Predictions — Thursday, April 3
Thursday's slate is light and starts early but is loaded with star power. Check out our predictions for today's matchups and apply them to the MLB betting promos above.
Boston Red Sox vs. Baltimore Orioles
- Time/Location: 1:05 p.m. ET at Oriole Park at Camden Yards (Baltimore, MD)
- Starting Pitchers: Tanner Houck (Boston Red Sox) vs. Charlie Morton (Baltimore Orioles)
- Prediction: Orioles ML (-120)
The Boston Red Sox secured a solid win last night, and Rafael Devers managed to get a hit, but their offense still has issues to address. They've scored three or fewer runs in four of their last five games, and seven players on the roster have struck out at least five times.
The Baltimore Orioles, on the other hand, have a more reliable offense. Morton has had the upper hand against the Red Sox throughout his career, limiting current Boston hitters to a .225 batting average and recording 18 strikeouts in 71 at-bats. With a quick turnaround, I'm taking the Orioles in this pick 'em matchup.
Colorado Rockies vs. Philadelphia Phillies
- Time/Location: 1:05 p.m. ET at Citizens Bank Park (Philadelphia, PA)
- Starting Pitchers: Antonio Senzatela (Colorado Rockies) vs. Taijuan Walker (Philadelphia Phillies)
- Prediction: Over 9.5 (-115)
Philadelphia’s offense is likely to keep rolling against Senzatela. In 67 combined plate appearances against the right-hander, the current Philadelphia Phillies lineup has posted a .345 batting average, .586 slugging percentage, and .415 wOBA.
Behind Senzatela, the Colorado Rockies' bullpen is one of the weakest in the league. Last season, Colorado’s relief corps ranked among the bottom three in ERA, FIP, xFIP, and WAR.
While Colorado doesn’t have the strongest lineup, it can still make noise against Walker. In 41 combined plate appearances against him, the current Rockies hitters have a .368 batting average, .526 slugging percentage, and .406 wOBA
Houston Astros vs. Minnesota Twins
- Time/Location: 4:10 p.m. ET at Target Field (Minneapolis, MN)
- Starting Pitchers: Hunter Brown (Houston Astros) vs. Joe Ryan (Minnesota Twins)
- Prediction: Over 7 (-120)
These teams have exchanged wins in their recent matchups, each securing five victories in the last ten head-to-head contests. While Houston's offense hasn't impressed early this season, they could score multiple runs in the first few innings, as Joe Ryan struggled against them last year.
Ryan posted a 6.75 ERA in 10.2 innings against Houston in 2024, while Hunter Brown had a 7.50 ERA in 12.0 innings against the Twins. Yordan Alvarez had three homers and seven RBI in just 12 at-bats against Ryan, so keep an eye on him in this game. I’m taking the Over.
Arizona Diamondbacks vs. New York Yankees
- Time/Location: 7:05 p.m. ET at Yankee Stadium (Bronx, NY)
- Starting Pitchers: Merrill Kelly (Arizona Diamondbacks) vs. Carlos Carrasco (New York Yankees)
- Prediction: Arizona Diamondbacks ML +100
The Diamondbacks have dominated the Yankees in this series, and Carlos Carrasco isn’t the pitcher I’d want on the mound if I were a Yankees fan. He was hammered in his season debut against the Brewers and struggled the past two seasons with the Mets and Guardians.
Dating back to 2023, Carrasco holds a 6.26 ERA and 1.54 WHIP. Meanwhile, Merrill Kelly was solid in his season debut against the Cubs and has limited current Yankees hitters to a .180 batting average with 24 strikeouts in 89 at-bats. I’m backing the Diamondbacks to complete an impressive sweep over the Yankees.
Cincinnati Reds vs. Milwaukee Brewers
- Time/Location: 7:40 p.m. ET at American Family Field (Milwaukee, WI)
- Starting Pitchers: Nick Lodolo (Cincinnati Reds) vs.Nestor Cortes (Milwaukee Brewers)
- Prediction: Cincinnati Reds ML +100
Both teams enter this series with a 2-4 record through six games, but the Milwaukee Brewers have home-field advantage. Milwaukee struggled in their opening series against the Yankees but rebounded well against the Royals earlier this week.
The Cincinnati Reds, on the other hand, have lost three of their last four games and have been shut out in back-to-back contests. While the Reds' offense has been struggling, their pitching staff has been impressive. With Cortes getting hit hard in his first start, I’m fading him until I see a better performance on the mound.