Sunday's MLB slate is packed with exciting matchups, featuring key games that have a major impact on the standings. With high-stakes action and star players in the spotlight, it’s the perfect time for bettors to take advantage of the best MLB betting promos.
Whether you're betting on an Arizona Diamondbacks vs. Philadelphia Phillies moneyline pick, backing your favorite pitcher in the strikeout market, or crafting a same-game parlay featuring Aaron Judge and Shohei Ohtani, Sunday’s schedule offers a variety of opportunities to maximize your betting edge.
If you're rooting for the Mets to stay hot or expecting a big day from the Red Sox, Sunday's action delivers plenty of value across all MLB odds markets, including total bases, home run props, and team run totals.
To make the most of the action, be sure to claim the top MLB betting promos from leading sportsbooks. These offers include bet-and-get bonuses, first bet insurance, and deposit match deals that provide flexibility and bonus funds, giving you more options for smart, strategic wagering.
Now is a great time to boost your bankroll and refine your betting strategy. Whether you're a seasoned bettor or placing your first MLB wager, these MLB betting promos offer great opportunities to target high-value matchups and enhance your chances of success.
Sign up today with one of the best MLB betting promos available and start locking in your picks for Sunday’s action-packed slate. Plus, be sure to check out expert picks and betting insights to help guide your wagers and make the most of the day’s games.
Below are all the top MLB betting promos available for Sunday’s matchups:
| Top MLB Sportsbooks | MLB Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | Up to $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 | Bet $1, Get 10 100% Profit Boost Tokens | ACTION4DYW |
MLB Betting Promos, Predictions, and Starting Pitchers for May 4
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
Every team is in action this Sunday, and you can be on multiple matchups by taking advantage of one of the top MLB betting promos from Bet365 Sportsbook. This loaded slate is a prime opportunity to lock in your bets early and maximize your returns with bonus offers.
New users who sign up with the bet365 bonus code TOPACTION can take advantage of two top-tier promos:
- Bet-and-Get $150 Bonus: Place a first bet of $5 or more and receive $150 in bonus bets, win or lose.
- $1,000 First Bet Safety Net: Prefer a higher-stakes approach? Your first wager is refunded in bonus bets — up to $1,000 — if it doesn’t cash.
These offers are available to users in AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, and VA — and Pennsylvania users get an extra perk. When registering with the bet365 bonus code TOPACTION, PA bettors also receive 50 spins for bet365 Casino, in addition to the $150 in bonus bets, regardless of their first wager’s outcome.
2. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Click Here
- New Fanatics Sportsbook Bet-and-Get Promo: Bet $50, Get $250 in Bonus Bets
- 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, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY
Whether you're placing bets for today’s games or spreading them out throughout the weekend, Fanatics Sportsbook has a lineup of strong MLB betting promos to help you boost your bankroll.
Here are the top Fanatics Sportsbook promo offers available for Sunday’s slate:
Up to $1,000 in No Sweat Bets
Available in: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY
Sign up and place a qualifying bet (at odds of -500 or longer) up to $100. If it doesn’t hit, you get your stake back in bonus bets. You can repeat this up to 10 times across your first 10 days, giving you 10 chances with no sweat.
Bet $30, Get $300 in Bonus Bets
Available in: AZ, MI, NJ, PA
Place a $30 wager and receive $300 in bonus bets, no matter the outcome. To unlock the full amount, you need to place at least one $10+ bet per day for your first three days after signing up.
Bet $50, Get $250 in Bonus Bets
Available in: CO, CT, IL, IN, LA, MA, MD, NC, OH, TN, VA, WV
With this Fanatics Sportsbook promo, you place a $50 wager and unlock $250 in bonus bets. To qualify, you must place a $10+ bet each day for five consecutive days, and you receive $50 in bonus bets after each qualifying bet settles.
300% Profit Boost Token (New York Exclusive)
Available in: NY
New York users can claim a 300% Profit Boost Token on their first bet after signing up. This offer is a great way to maximize your potential return on Sunday’s MLB games.
To activate any of these Fanatics Sportsbook promo offers, make an initial deposit of at least $10 and place a qualifying bet at odds of -500 or longer.
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
Sunday's slate features a bevy of big games, such as the Diamondbacks vs. Phillies matchup, which offers a perfect opportunity to jump into the action. If you're looking to make your first wager or build your MLB bankroll, BetMGM Sportsbook is offering several top-tier MLB betting promos designed to give new users a strong start.
Bet $10, Get $150 in Bonus Bets
Available in: CO, MI, NJ, PA, WV
Sign up with the BetMGM bonus code ACTIONGET, place your first bet of $10 or more on any MLB market, and if your wager wins, you receive $150 in bonus bets. This promo is ideal for getting extra value out of your first bet.
First Bet Offer: Up to $1,500 Back in Bonus Bets
Available in: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY
Prefer to bet with a little more safety? Use the BetMGM bonus code TOPACTION to activate this offer. If your first wager loses, you receive up to $1,500 back in bonus bets. The refund is paid out as five equal bonus bets, giving you several chances to hit a winner over the coming week.
20% Deposit Match Up to $1,600
Available in: AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, WY
If you're planning to bet throughout the MLB season, this offer gives you long-term value. Sign up with the BetMGM bonus code TOPTAN1600 to receive a 20% deposit match up to $1,600 in bonus funds. A deposit of just $10 qualifies, but to receive the full bonus, you need to deposit $8,000.
This is a great way to stretch your budget across daily bets, especially with a full MLB slate on deck.
4. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Welcome Offer: 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
With afternoon games on deck, it’s the perfect opportunity to get in on the action, and Caesars Sportsbook has one of the best MLB betting promos to help you do just that.
New users who sign up with the Caesars Sportsbook promo code ACTION4DYW can place a first bet of just $1 and instantly receive 10 Profit Boost Tokens, giving them the chance to double their potential winnings on multiple bets.
How to Claim and Use Your Caesars Profit Boost Tokens Today:
- Register with Caesars Sportsbook using promo code ACTION4DYW
- Place a $1+ first bet on any MLB market
- Instantly receive 10 Profit Boost Tokens
- Use each token to boost your payout on bets of up to $25
These tokens can be applied to a wide range of MLB betting markets, including moneylines, run lines, and player props. Keep in mind that all tokens expire 14 days after they're issued, so be sure to use them quickly across today’s loaded slate and beyond.
Top Alternatives to MLB Betting Promos for Sunday’s Slate
Sunday is a great day to get in on the action on the diamond. While many fans turn to traditional sportsbooks and welcome promos, there’s another way to get involved — through Daily Fantasy Sports (DFS) platforms like Sleeper Fantasy and Underdog Fantasy.
These DFS apps allow you to build custom pick’em lineups, create player props, and wager on individual stat projections — including total bases, home runs, RBIs, and strikeouts. If you’re looking for a more interactive, fast-paced experience, Sleeper and Underdog offer great alternatives that complement standard sportsbook play.
1. Sleeper Fantasy
- Sleeper Fantasy Promo Code: ACTION
- Sleeper Fantasy Sign-Up Offer: Get a 100% Deposit Match up to $100
- States Available: AK, AR, CA, CO, FL, GA, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, WI, WY, DC
Sleeper Fantasy is a leading DFS platform for building player-focused entries. When you sign up using the Sleeper Fantasy promo code, you receive a 100% deposit match up to $100, giving you immediate bonus funds to create lineups for Sunday’s slate.
Build your entry around today’s early matchup — whether it’s an Aaron Judge hit total, strikeout props for Garrett Crochet, or other projections. You can make “More” or “Less” picks on stat lines and group up to 8 picks into one entry.
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
Underdog Fantasy delivers another exciting DFS experience, letting you craft high-upside pick’em entries using MLB player projections. When you join with the Underdog promo code TOPACTION, you receive a 50% deposit match up to $1,000, giving you a major boost to start the day.
Use your funds to target players like Shohei Ohtani, Bryce Harper, or Aaron Judge.
MLB Starting Pitchers & Predictions — Sunday, May 4
Arizona Diamondbacks vs. Philadelphia Phillies
- Time/Location: 2:05 p.m. ET at Citizens Bank Park (Philadelphia, PA)
- Starting Pitchers: Eduardo Rodriguez (Arizona Diamondbacks) vs. Ranger Suarez (Philadelphia Phillies)
- Prediction: Phillies ML (-130)
I’m backing the Phillies in this matchup. I understand any concerns about Ranger Suárez making his season debut, but he’s been sharp in his rehab starts and has consistently been one of the top left-handed pitchers in baseball. The Diamondbacks are struggling in this series, and the Phillies' bullpen has been improving recently. I like Philly to take this one.
Chicago Cubs vs. Milwaukee Brewers
- Time/Location: 2:10 p.m. ET at American Family Field (Milwaukee, WI)
- Starting Pitchers: Freddy Peralta (Milwaukee Brewers) vs. Shota Imanaga (Chicago Cubs)
- Prediction: Under 7.5 (-105)
The Brewers have won six of the last ten matchups against the Cubs, but the Cubs have had the upper hand in four of the past six encounters. Freddy Peralta has dominated the Cubs in his career, holding them to a .171 batting average over 117 at-bats.
Given Peralta's strong track record against Chicago, I’m leaning toward the Brewers. Last year, in three starts (17.2 innings) against the Cubs, Peralta posted a solid 2.55 ERA. On the other hand, Shota Imanaga struggled in his only start against the Brewers, finishing with a 14.54 ERA in 4.1 innings.
However, the Brewers' offense has been struggling lately, and I expect Imanaga to perform better on Sunday. Given the circumstances, I’m taking the Under.