Best MLB Betting Promos on Friday, August 7: Claim Thousands in Bonus Value Today

The MLB betting promos on the board for Friday, August 7 add up to thousands in bonus value, and new customers can stack several of them across the full slate. First pitch on the early MLB games lands at 6:40 p.m. ET, and the card runs through a 10:15 p.m. ET nightcap.

Two matchups carry national streaming spots on Apple TV. Orioles vs. Rangers starts at 8:15 p.m. ET, and Rays vs. Mariners follows at 9:45 p.m. ET. That gives you a clean window to sign up, place a qualifying wager, and watch it play out.

Fanatics Sportsbook leads the group with a $1,000 Bet Match through promo code ACTION26. BetMGM counters with a $1,500 First Bet Offer using bonus code TOPACTION. bet365, DraftKings, and Hard Rock Bet each convert a small qualifying bet into $150 in bonus bets.

Below, we break down all ten offers, the states where each one lives, and the two prediction market bonuses worth a look. Claim a few of these MLB betting promos before the Apple TV doubleheader and put the extra bankroll toward your MLB best bets today.

Best MLB Betting Promos for Friday, August 7

Ten operators rank among the best sports betting sites for tonight's card, and each one runs a different welcome structure. Bet-and-get offers pay out fast and suit smaller bankrolls. First-bet insurance and bet match offers protect a larger opening wager instead.

Match the shape of the offer to how you plan to attack MLB odds tonight. A $5 qualifier fits a casual play on Orioles vs. Rangers. A safety net makes more sense if you want real money behind a Rays vs. Mariners side or total.

1. Fanatics Sportsbook

The Fanatics Sportsbook promo code ACTION26 unlocks the longest runway of any offer on this list. The book matches your first bet each day for 10 consecutive days, up to $100 per day, for a maximum of $1,000 in FanCash.

That structure rewards anyone betting the MLB card daily rather than once. Start tonight with a $100 wager on the Apple TV doubleheader, then come back tomorrow and repeat it. Fanatics Sportsbook also runs a separate Bet $20, Get $350 offer and a 10-token profit boost package in Illinois and New York.

2. BetMGM

The BetMGM bonus code TOPACTION carries the largest headline number among tonight's MLB betting promos. Place a first wager up to $1,500, and a loss comes back to you in bonus bets.

The size fits bettors who already have a strong lean. Put it behind a Rangers side, a Mariners moneyline, or a starter strikeout prop and keep the downside covered. Bettors in Michigan, New Jersey, Pennsylvania, and West Virginia get a Bet $10, Get $150 offer through code ACTIONGET instead, while TANGET2 delivers $1,000 in No Sweat Tokens across a separate list of states.

3. bet365

The bet365 bonus code pays out win or lose, which separates it from most first-bet offers. Wager $10 on any MLB market tonight, and $150 in bonus bets hits your account regardless of the result.

New customers in Arizona, Colorado, Illinois, and several other states can swap that for a $1,000 First Bet Safety Net if they prefer protection on a bigger stake. Michigan, New Jersey, and Pennsylvania bettors add 50 casino spins on top of the $150. Any of the three works as a launch point for Orioles vs. Rangers.

4. DraftKings

The DraftKings promo code runs the lowest barrier to entry tonight. A $5 qualifying wager triggers $150 in bonus bets instantly, with no requirement that the bet wins.

Speed matters here. Deposit, bet $5 on the Rays vs. Mariners first-inning total, and the bonus bets land in time to use on the same game. DraftKings also covers the widest footprint on this list at 24 states plus D.C.

5. FanDuel

The FanDuel promo code takes a daily approach. Bet $5 each day, and a loss comes back as a bet reset, up to $1,000 in total across the promotional window.

Baseball suits that format better than any other sport because the schedule never stops. Fire a $5 bet on tonight's Apple TV games, then keep rolling through the weekend card. FanDuel operates in 24 states plus D.C.

6. theScore Bet

theScore Bet promo code ACTNEWS opens a $1,000 First Bet Reset for new users. Lose the opening wager, and the book refunds it in bonus bets up to that ceiling.

The app pairs the offer with a clean interface for live betting, which helps during a late window like Rays vs. Mariners. Bettors in Michigan, New Jersey, Pennsylvania, and West Virginia get a Bet $10, Get $100 version through the same code.

7. betPARX

The betPARX promo code TANBONUS delivers 100% bet insurance on a first wager up to $50. A loss returns to you as a bonus bet at full value.

The smaller ceiling keeps the qualifying commitment low, which appeals to bettors testing a new app. betPARX serves Maryland, New Jersey, and Pennsylvania.

8. Hard Rock Bet

The Hard Rock Bet promo code asks for just $5 and returns $150 in bonus bets when that wager wins. The win condition raises the bar slightly, so pick a favorite you like rather than a longshot.

A heavy home favorite on tonight's MLB slate clears it comfortably. Hard Rock Bet currently accepts new customers in Michigan and New Jersey.

9. BetRivers

The BetRivers bonus code structures its welcome offer as a 2nd Chance Bet. A losing first wager earns a bonus bet in return, and the maximum depends on your state.

Michigan and Pennsylvania bettors reach up to $500, New Jersey caps at $250, and West Virginia sits at $100. The higher ceilings make this one of the stronger MLB betting promos for anyone comfortable staking a larger opening bet.

10. Borgata

The Borgata bonus code ACTION turns a $20 wager into $100 in bonus bets, credited instantly. No win requirement applies.

The offer lives in New Jersey only, and it pairs well with a low-risk qualifier such as a run line on a big favorite. Check the MLB weather report before you settle on a total, since both Apple TV games sit under a roof while the rest of the slate plays outdoors.

Prediction Market Promos for Friday's MLB Slate

Prediction markets give players in unregulated states a path to tonight's action, and both major platforms run referral bonuses right now. Contracts trade on a 0 to 100 scale, so the price itself tells you the implied probability. Traders in more than 40 states can access game markets on Orioles vs. Rangers, Rays vs. Mariners, and season-long contracts including the MLB MVP race.

1. Kalshi

The Kalshi promo code ACTION returns up to a $500 bonus after you trade $25 on the platform. That threshold clears with a single position on tonight's Apple TV doubleheader.

Kalshi operates as a federally regulated exchange, which extends its reach into states without legal sportsbooks. Compare the contract price against MLB odds at the books above before you commit, then check MLB lineups once managers post them.

2. Polymarket

The Polymarket promo code ACTION doubles a small deposit. Fund the account with $10, and a $20 trading bonus follows.

The platform covers the same broad state list as Kalshi and posts markets on every game across the Friday MLB card. Use the bonus to shadow your MLB picks at a second venue and see which price offers better value.