Sign up and bet on any of this evening's MLB action on Saturday, March 29 and take advantage of the best MLB betting promos. These sign-up bonuses can be found at some of the top online sportsbooks in the industry today, including bet365, Fanatics Sportsbook, BetMGM, and Caesars Sportsbook.
Collectively, there is over $5,000 in MLB betting promos across these four sports betting sites. Keep in mind, however, that you can only claim one sign-up bonus at each sportsbook when you create a new account even if multiple are offered.
Here is a look at the best MLB betting promos to claim today:
| Best MLB Sportsbooks | MLB Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $1,000 First Bet Safety Net or $150 Bet-and-Get | TOPACTION |
| Fanatics Sportsbook | $1,000 in No Sweat Bets or $300 Bet-and-Get | 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: Claim These Sign-Up Bonuses for Tonight's Action
Let's discuss the best MLB betting promos available at top online sportsbooks today. Remember, you can only claim one offer at each betting app even if there are multiple promos available in your state.
bet365
| bet365 Promo | States Available | bet365 Bonus Code |
|---|---|---|
| $150 Bet-and-Get | AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, VA | TOPACTION |
| $1,000 First Bet Safety Net | AZ, CO, IA, IL, IN, KY, LA, NC, NJ, OH, TN, VA | TOPACTION |
| $150 Bet-and-Get + 50 Casino Spins | PA | TOPACTION |
Sign up with the bet365 bonus code TOPACTION to get a choice between a $150 bet-and-get and a $1,000 First Bet Safety Net. The bet-and-get requires a $5+ first bet in exchange for $150 in bonus bets, while the first bet insurance promo grants up to $1,000 in bonus bets if your first bet loses.
If you register in Pennsylvania, you receive a $150 bet-and-get and 50 spins at bet365 Casino.
Suppose I place a $100 first bet on the Red Sox moneyline (+120) in Red Sox vs. Rangers at 7:05 p.m. ET. Here is what I receive with each offer depending on the outcome:
- Bet-and-Get: If the bet wins, I receive $120 in profit, my $100 stake back, and $150 in bonus bets. If the bet loses, I still get $150 in bonus bets.
- First Bet Safety Net: If the bet wins, I receive $120 in profit and my $100 stake back. If the bet loses, I receive $100 in bonus bets.
- PA Bet-and-Get: If the bet wins, I receive $120 in profit, my $100 stake back, $150 in bonus bets, and 50 casino spins. If the bet loses, I still get $150 in bonus bets and 50 casino spins.
Fanatics Sportsbook
| Fanatics Sportsbook Promo | States Available | Sign-Up Link |
|---|---|---|
| Bet and Get up to $1,000 in No Sweat Bets | AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY | Click Here |
| Bet $30, Get $300 in Bonus Bets | AZ, CO, CT, IN, LA, MA, MD, MI, NJ, PA, TN, VA, WV | Click Here |
| Sign Up and Get a 300% Profit Boost Token | NY | Click Here |
Sign up and take advantage of one of the three MLB betting promos available today at Fanatics Sportsbook. Each Fanatics Sportsbook promo is structured in a unique way relative to the other top sportsbooks listed on this page.
The offer that is available in most states provides up to $1,000 in No Sweat Bets across your first 10 days. Opt-in each day and place a -500 minimum odds bet. If it loses, you get up to $100 in bonus bets to cover the loss. Alternatively, claim a $300 bet-and-get offer that spans across three days. Bet $10 and get $100 in bonus bets, win or lose.
If you sign up in New York, you receive a different Fanatics Sportsbook promo. Register and get a 300% Profit Boost Token.
BetMGM
| BetMGM Promo | States Available | BetMGM Bonus Code |
|---|---|---|
| $150 Bet-and-Get | CO, MI, NJ, PA, WV | ACTIONGET |
| $1,600 Deposit Match Offer | AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, WY | TOPTAN1600 |
| $1,500 First Bet Promo | AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY | TOPACTION |
A trio of MLB betting promos are available at BetMGM today. Use the BetMGM bonus code ACTIONGET for a $150 bet-and-get offer. Place a $10+ first bet and get $150 in bonus bets if you win.
When you sign up with the BetMGM bonus code TOPTAN1600 instead, you receive a 20% deposit match of up to $1,600 in sports bonus that carries a 10x rollover requirement. Alternatively, apply the BetMGM bonus code TOPACTION for a promo that yields up to $1,500 in bonus bets if your first bet loses.
For example, let's say I claim the $150 bet-and-get offer. I place my initial wager for $5 on the Padres moneyline (+130) in Braves vs. Padres at 7:15 p.m. ET:
- If my bet wins, I receive $6.50 in profit, my $5 stake back, and $150 in bonus bets.
- If my bet loses, I receive nothing.
Caesars Sportsbook
| Caesars Sportsbook Sign-Up Bonus | States Available | Caesars Sportsbook Promo Code |
|---|---|---|
| Bet $1+, Get 10 100% Profit Boost Tokens | AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY | ACTION4DYW |
Register now and claim one of the most unique MLB betting promos at Caesars Sportsbook today. Use the Caesars Sportsbook promo code ACTION4DYW and place a $1+ first bet to get 10 100% Profit Boost Tokens. Each Token can be applied to wagers of up to $25 and expires 14 days after receipt.
Alternative to MLB Betting Promos: Kalshi
| Kalshi Sign-Up Bonus | States Available | Kalshi Promo Code |
|---|---|---|
| Trade on Sports & Politics – Get a $10 Bonus with Our Code | AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC | ACTION |
An excellent alternative to the best MLB betting promos is Kalshi, a sports trading platform that allows you to buy and sell shares of outcomes, functioning similarly to a stock market. Sign up with the Kalshi promo code ACTION now to get a $10 bonus when you complete $100 in total trades.
MLB Opening Weekend Probable Pitchers — Saturday, March 29
Use the top MLB betting promos to bet on any game tonight, including those listed below:
- Red Sox vs. Rangers, 7:05 p.m. ET: Walker Buehler vs. Tyler Mahle
- Braves vs. Padres, 7:15 p.m. ET: Spencer Schwellenbach vs. Randy Vasquez
- Mets vs. Astros, 7:15 p.m. ET: Griffin Canning vs. Spencer Arrighetti
- Cubs vs. Diamondbacks, 8:10 p.m. ET: Shota Imanaga vs. Brandon Pfaadt
- Tigers vs. Dodgers, 9:10 p.m. ET: Reese Olson vs. Roki Sasaki
- Athletics vs. Mariners, 9:40 p.m. ET: Osvaldo Bido vs. Bryce Miller