The best MLB betting promos on the board combine for more than $4,000 in welcome bonuses this Monday, and every one is live for tonight's full slate. Register at more than one app, spread the offers across the moneyline, run line, and totals, and let each welcome bonus cover a different market. There are two key games available today in the MLB:Rays vs. Tigers at 6:40 p.m. ET on FS1 and Reds vs. Giants at 9:45 p.m. ET on FS1.
Fanatics leads the board with a $1,000 bet match, BetMGM counters with a $1,500 first-bet offer, and DraftKings just bumped its bet-and-get to $200. The rest of the field fills in everything from bet resets to second-chance insurance. These MLB betting promos change fast, so lock in the ones you want before first pitch.
| MLB Sportsbooks | MLB Betting Promos | Sign-Up Link |
|---|---|---|
| Fanatics Sportsbook | $1,000 Bet Match | ACTION26 |
| BetMGM | $1,500 First Bet Offer | TOPACTION |
| bet365 | $150 Bet-and-Get Promo | TOPACTION |
| DraftKings Sportsbook | $200 Bet-and-Get Promo | Click Here |
| FanDuel Sportsbook | $1,000 Bet Resets | Click Here |
| theScore Bet | $1,000 First Bet Reset | ACTNEWS |
| betPARX | $50 Bet Insurance | TANBONUS |
| Hard Rock Bet | $100 Bet-and-Get Promo | Click Here |
| BetRivers | 2nd Chance Bet, Up to $500 | Click Here |
| Borgata | $100 Bet-and-Get Promo | ACTION |
Best MLB Betting Promos for Monday, August 24
We ranked the 10 best MLB betting promos below, plus two prediction market bonuses. Check the legal states column in each table before you register, since where sports betting is legal still changes from state to state. For a wider view, see our full list of the best sports betting sites.
1. Fanatics Sportsbook
The Fanatics Sportsbook promo code ACTION26 matches one bet per day for 10 straight days, up to $100 each day, and any $1 wager at -200 or longer qualifies. Miss a day and you give up that day's match, so shop MLB odds across the full card and log in every night.
Each match lands as FanCash, which you spend as bonus bets in the app or convert into merchandise on Fanatics.com. FanCash expires seven days after it hits your account, so this offer rewards bettors who stay active all 10 days.
| Fanatics Sportsbook Promo | Fanatics Sportsbook Sign-Up Bonus | Fanatics Sportsbook Legal States |
|---|---|---|
| Fanatics Sportsbook Promo Code ACTION26 | Get Up To $1,000 Matched in FanCash | AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY |
| Fanatics Sportsbook Promo Code (Click Here) | Bet $20, Get $350 in FanCash | AZ, CO, CT, DC, IA, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, OH, PA, TN, VA, VT, WV, WY |
| Fanatics Sportsbook Promo Code (Click Here) | Get 10x100% Profit Boost Tokens Instantly | IL, NY |
2. BetMGM
The BetMGM bonus code TOPACTION covers your opening wager up to $1,500, and a loss returns the full stake in bonus bets.
Bettors in Michigan, New Jersey, Pennsylvania, and West Virginia swap that offer for BetMGM bonus code ACTIONGET and turn $10 into $150 after a winning first bet.
| BetMGM Bonus Code | BetMGM Promo | BetMGM Legal States |
|---|---|---|
| BetMGM Bonus Code TOPACTION | $1,500 First Bet Offer | AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, NC, OH, TN, VA, WY |
| BetMGM Bonus Code TANGET2 | $1,000 No Sweat Tokens | AZ, CO, DC, IA, IL, IN, LA, KS, KY, MD, MO, NC, OH, TN, VA, WY |
| BetMGM Bonus Code ACTIONGET | Bet $10, Get $150 Bonus Bets if You Win | MI, NJ, PA, WV |
3. bet365
The bet365 bonus code offer pays $150 in bonus bets on a $10 wager, win or lose, which ranks it among the friendliest MLB betting promos for a Yankees vs. Orioles moneyline play.
Several states get a $1,000 First Bet Safety Net version of the bet365 bonus code instead, so match the offer to your bankroll before you deposit.
| bet365 Bonus Code | bet365 Welcome Promo | bet365 Legal States |
|---|---|---|
| bet365 Bonus Code (Click Here) | Bet $10, Get $150 in Bonus Bets, Win or Lose | AZ, CO, IA, IN, KS, KY, LA, MD, MO, NC, NJ, OH, PA, VA |
| bet365 Bonus Code (Click Here) | $1,000 First Bet Safety Net | AZ, CO, IA, IL, IN, KS, KY, LA, MD, MO, NC, OH, TN, VA |
| bet365 Bonus Code (Click Here) | Bet $10, Get $150 in Bonus Bets, Win or Lose, 50 Casino Spins | MI, NJ, PA |
4. DraftKings
The DraftKings promo code offer turns any $5 first bet into $200 in bonus bets, now one of the biggest welcome payouts among these MLB betting promos. The $200 pays out as $50 in bonus bets every seven days, so plan to keep claiming through the week.
DraftKings prices every game on tonight's card, so pair the DraftKings promo code bonus with our MLB coverage and ride the results.
| DraftKings Promo Code | DraftKings Welcome Offer | DraftKings Legal States |
|---|---|---|
| DraftKings Promo Code (Click Here) | Bet $5, Get $200 in Bonus Bets | AR, AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY |
5. FanDuel
The FanDuel promo code offer starts with a $5 deposit, then issues a Bet Reset Token worth up to $200 for each day you place a $5 wager over five straight days, for $1,000 total.
Toggle the token on in your betslip before you confirm the wager, and a losing reset returns bonus bets within 72 hours that expire after seven days.
| FanDuel Promo Code | FanDuel Sign-Up Bonus | FanDuel Legal States |
|---|---|---|
| FanDuel Promo Code (Click Here) | Bet $5 Daily, Get Up To $1000 In Bet Resets | AZ, AR, CO, CT, DC, IL, IA, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY |
6. theScore Bet
theScore Bet promo code ACTNEWS resets your opening wager up to $1,000 in bonus bets after a loss. This is certainly one of the higher value MLB betting promos available today.
The app builds parlays in seconds, so ACTNEWS rewards bettors who react to shifting MLB lineups and news.
| theScore Bet Promo Code | theScore Bet Welcome Offer | theScore Bet Legal States |
|---|---|---|
| theScore Bet Promo Code ACTNEWS | $1,000 First Bet Reset | AZ, CO, IA, IL, IN, KS, KY, LA, MA, MD, MO, NC, OH, TN, VA |
| theScore Bet Promo Code ACTNEWS | Bet $10, Get $100 in Bonus Bets If You Win | MI, NJ, PA, WV |
7. betPARX
The betPARX promo code TANBONUS adds 100% insurance on your first bet, up to a $50 bonus bet, for Pennsylvania bettors.
Small ask, quick payback, and the betPARX promo code TANBONUS covers any game on tonight's card.
| betPARX Promo Code | betPARX Sign-Up Offer | betPARX Legal States |
|---|---|---|
| betPARX Promo Code TANBONUS | 100% Bet Insurance, Up to $50 Bonus Bet | PA |
8. Hard Rock Bet
The Hard Rock Bet promo code offer pays $100 in bonus bets on a $5 first wager in Michigan and New Jersey.
Hard Rock ranks among the best sports betting sites for same-game parlays, so the welcome bonus fits a primetime night game.
| Hard Rock Bet Promo Code | Hard Rock Bet Welcome Bonus | Hard Rock Bet Legal States |
|---|---|---|
| Hard Rock Bet Promo Code (Click Here) | Bet $5, Get $100 in Bonus Bets | MI, NJ |
9. BetRivers
The BetRivers bonus code second-chance bet returns up to $500 in Michigan and Pennsylvania, with smaller caps in New Jersey and West Virginia.
BetRivers also posts daily boosts on run lines, so value continues after you clear the BetRivers bonus code welcome offer.
| BetRivers Bonus Code | BetRivers Sign-Up Bonus | BetRivers Legal States |
|---|---|---|
| BetRivers Bonus Code (Click Here) | 2nd Chance Bet: Get Up to a $500 Bonus Bet | MI, PA |
| BetRivers Bonus Code (Click Here) | 2nd Chance Bet: Get Up to a $250 Bonus Bet | NJ |
| BetRivers Bonus Code (Click Here) | 2nd Chance Bet: Get Up to a $100 Bonus Bet | WV |
10. Borgata
The Borgata bonus code ACTION turns a $20 wager into $100 in bonus bets instantly, with no win requirement.
New Jersey bettors view the Borgata promo code ACTION as having the fastest guaranteed payout among all of these MLB betting promos.
| Borgata Bonus Code | Borgata Welcome Offer | Borgata Legal States |
|---|---|---|
| Borgata Bonus Code ACTION | Bet $20, Get $100 Instantly in Bonus Bets | NJ |
Prediction Market Promos for MLB
Prediction markets reach more than 40 states, so traders outside sportsbook territory still get action on tonight's games, division futures, and the MVP market. Check out the best available prediction market promos below.
1. Kalshi
The Kalshi promo code ACTION delivers a flat $25 bonus once you trade $25 on the platform, a fresh upgrade over the old random reward.
Kalshi lists single-game contracts alongside season-long markets, and the Kalshi promo code ACTION works for both.
| Kalshi Promo Code | Kalshi Referral Offer | Kalshi States Available |
|---|---|---|
| Kalshi Promo Code ACTION | Trade $25, Get $25 Bonus | AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY |
2. Polymarket
The Polymarket promo code ACTION converts a $10 deposit into a $20 trading bonus, the lowest entry point of these MLB prediction market promos.
Prices swing quickly once a lineup card drops, so claim the Polymarket referral code ACTION early so you're ready to trade once the MLB slate is live.
| Polymarket Promo Code | Polymarket Referral Bonus | Polymarket States Available |
|---|---|---|
| Polymarket Promo Code ACTION | Deposit $10, Get $20 Trading Bonus | AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY |
How to Use These MLB Betting Promos
Register at more than one app to stack the value. Start with a bet-and-get like DraftKings or bet365 for a fast, low-risk return, add a first-bet offer like BetMGM for a bigger swing on the moneyline, then keep a reset offer like FanDuel or theScore Bet in reserve for the nights a favorite lets you down. Check each book's MLB odds before you commit a qualifying wager.
