Apple TV's doubleheader of Rays vs. Orioles and Angels vs. Rangers headlines a full 15-game slate on this Friday, Aug. 21. There are thousands of dollars up for grabs in MLB betting promos that are waiting for you to claim.
The MLB playoff picture still has some pieces to fit in, particularly in the AL Wild Card race, where the Orioles are looking to improve their position against the Rays tonight at 7:15 p.m. ET. Speaking of that same race, the Rangers are inches off that last spot, and they're only a couple of games behind the Astros for the AL West lead. All of that to say, a weekend visit from the Angels may be just what the doctor ordered.
Scroll through the MLB betting promos in this article and claim over $5,000 in bonus funds. If you're not signed up at that sportsbook, are in a state where sports betting is legal, and the operator is available, you can clean house and stack bonuses for the playoffs.
| 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 | Click Here |
| DraftKings Sportsbook | $150 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 | $150 Bet-and-Get Promo | Click Here |
| BetRivers | 2nd Chance Bet, Up to $500 | Click Here |
| Borgata | $100 Bet-and-Get Promo | ACTION |
MLB Schedule: Friday, August 21, 2026
| MLB Matchup | Game Time | Location |
|---|---|---|
| Atlanta Braves at Milwaukee Brewers | 4:10 PM ET | American Family Field, Milwaukee, WI |
| St. Louis Cardinals at Philadelphia Phillies | 6:40 PM ET | Citizens Bank Park, Philadelphia, PA |
| Toronto Blue Jays at New York Yankees | 7:05 PM ET | Yankee Stadium, New York, NY |
| San Francisco Giants at Boston Red Sox | 7:10 PM ET | Fenway Park, Boston, MA |
| Washington Nationals at Miami Marlins | 7:10 PM ET | loanDepot Park, Miami, FL |
| *Tampa Bay Rays at Baltimore Orioles | 7:15 PM ET | Camden Yards, Baltimore, MD |
| New York Mets at Chicago White Sox | 7:40 PM ET | Rate Field, Chicago, IL |
| Athletics at Houston Astros | 8:10 PM ET | Daikin Park, Houston, TX |
| Detroit Tigers at Kansas City Royals | 8:10 PM ET | Kauffman Stadium, Kansas City, MO |
| *Los Angeles Angels at Texas Rangers | 8:15 PM ET | Globe Life Field, Arlington, TX |
| Cleveland Guardians at Colorado Rockies | 8:40 PM ET | Coors Field, Denver, CO |
| Cincinnati Reds at Arizona Diamondbacks | 9:40 PM ET | Chase Field, Phoenix, AZ |
| Minnesota Twins at San Diego Padres | 9:40 PM ET | Petco Park, San Diego, CA |
| Chicago Cubs at Seattle Mariners | 10:10 PM ET | T-Mobile Park, Seattle, WA |
| Pittsburgh Pirates at Los Angeles Dodgers | 10:10 PM ET | Dodger Stadium, Los Angeles, CA |
* denotes game shown on Apple TV
Best MLB Betting Promos for Friday, August 21
All of the MLB betting promos listed have been verified by the staff at Action Network. Below, you'll find all of the details needed to get signed up and exactly how much you'll walk away with at the end.
1. Fanatics Sportsbook Promo Code
With the Fanatics Sportsbook promo codeACTION26, you get a $1,000 Bet Match broken up over 10 days. If you like spreading out your bets, this is certainly going to be the deal for you. Now, keep in mind, you'll only get bonus bets if you lose your wagers; if you win, you keep those earnings like you normally would. Personally, I like MLB betting promos that offer a bit of forgiveness because they let you take bigger chances than you normally would and still leave you with a bet if things go sideways.
The 10-day span works well for baseball, considering these guys are on the field nearly every day. Once we get to football season, you only have so many chances.
| Fanatics Sportsbook Promo | Fanatics Sportsbook Sign-Up Bonus | Fanatics Sportsbook Legal States |
|---|---|---|
| Fanatics Sportsbook Promo Code ACTION26 | $1,000 Bet Match | 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 Bonus Bets | 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 Bonus Code
The BetMGM bonus code TOPACTION offers the most value compared to the other MLB betting promos listed below. With this offer, you'll get up to $1,500 in bonus bets back if your first wager loses; if you win, you keep the earnings.
I'm not sure how risky you like to get, but I would think about putting a sizeable wager on an Orioles' hitter to go yard against Freddy Peralta, who has allowed 20 HR this season. 15 of those 20 HR have come from left-handed bats, so Gunnar Henderson or Colton Cowser could be the play here. But let's not forget Pete Alonso, who is on an absolute heater right now.
| 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 Bonus Code
The bet365 bonus code is one of the easiest MLB betting promos to use. There is no promo code text to enter, but you'll just need to sign up, wager $10 on any MLB market, and you'll get $150 in bonus bets. It doesn't matter if the initial bet wins or loses; you're still claiming the bonus.
It's worth noting that in the versions for MI, NJ, and PA, you'll get the same deal, plus 50 Casino Spins.
With $150 in bonus bets, you'll have a lot of options to work with. You can do anything from placing a simple moneyline winner to going for gold with a Same Game Parlay that can hit big.
| 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 Promo Code
Like the offer above, the DraftKings promo code works right off the link, and it only requires a $5 investment to get started. You will place a wager of $5 on any qualifying market, and that unlocks $150 in bonus bets, whether your bet wins or loses. Heck, you'll get the bonus $150 before the game even starts.
Once again, you can use this offer in a few ways. The Angels may look like a sizeable underdog, but Reid Detmers has shown some good stuff at times this season. Maybe a first-five-inning moneyline win for the Halos is the way to go here?
| DraftKings Promo Code | DraftKings Welcome Offer | DraftKings Legal States |
|---|---|---|
| DraftKings Promo Code (Click Here) | Bet $5, Get $150 Instantly 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 Promo Code
We've got another MLB betting promo that doesn't require you to enter a promo code. FanDuel is so kind, aren't they? The FanDuel promo code differs, though, in that it offers bet forgiveness across five days. If you lose a selected bet over the course of those five days, you can get up to $200 in bonus bets back for each defeat. Hate to say it, but if you go 0-5 on these bets, you can get up to $1,000 in bonus bets.
This is another spot where I would take some kind of chance, and you can do it in a variety of ways over the five days. I could bet on the Angels moneyline tonight, and then come back the next day with a HR bet, and maybe even throw in a longshot touchdown on one of the NFL preseason games. The good news is that you have multiple chances to be heroic at FanDuel.
| 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 Promo Code ACTNEWS
The kindness continues, as theScore Bet promo code ACTNEWS gives new users a $1,000 First Bet Reset. This is a phenomenal offer: if your first bet loses, you'll get up to $1,000 back in bonus bets.
In MI, NJ, PA, and WV, the offer shifts to a Bet $10, Get $100 in bonus bets if you win. Basically, make sure you pick as much of a "sure thing" winner as you can because you get nothing if that bet loses.
| 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 Promo Code TANBONUS
It may not be the biggest offer on the board, but the betPARX promo code TANBONUS does give users a bonus bet back, up to $50, if the first bet loses. As usual, users keep the earnings if they win on that first bet. The sign-up process is quick, which is another plus when comparing other MLB betting promos. Unfortunately, betPARX is only limited to people in Pennsylvania.
On a small offer like this, I'm going for something big off the bat. I could take a HR hitter I liked earlier, such as Pete Alonso, and pair him up with a guy like Mike Trout, who has homered off the opposing starting pitcher (Mackenzie Gore) before.
| 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 Promo Code
The Hard Rock Bet promo code doesn't require a promo code like other MLB betting promos; you just need to click the link to start the registration process. But the offer is simple: place a first-time wager of $5, and if it wins, you'll get $150 in bonus bets. You will not receive any bonus bets for a losing effort.
With the $150 in bonus bets, you can make some noise or play it safe and double your investment. Not to mention, Hard Rock has some pretty sweet casino offerings as well.
| 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 $150 in Bonus Bets if You Win | MI, NJ |
9. BetRivers Bonus Code
The BetRivers bonus code is also limited to certain states (MI, NJ, PA, WV), and the deal varies by location. In MI and PA, new users get a 2nd Chance Bet, up to a $500 bonus bet, while NJ gets the same deal with a $250 bonus bet and WV at a $100 bonus bet. Essentially, if your first bet loses, then you'll get a bonus bet back in return, and the amount of that bonus bet depends on where you are located.
As an NJ resident, that $250 bonus bet goes a long way. If I received this offer, I would take my usual big risk on the first bet, and if it doesn't win, then I would try something more reassuring, like a Rangers moneyline win tonight.
| 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 Bonus Code ACTION
Last but not least, the Borgata bonus code ACTION is right up my alley since it's only available in NJ. It's a solid Bet $20, Get $100 Instantly in Bonus Bets offer. The best part is that they're free bonus bets; it doesn't matter whether your initial wager wins.
My Jersey friends and I will scoop up this welcome offer, and who knows? Maybe we'll take a trip down the parkway to the actual Borgata with the winnings. With $100 in bonus bets to start, I'm thinking that an Orioles-Rangers moneyline parlay could be the way to go.
| Borgata Bonus Code | Borgata Welcome Offer | Borgata Legal States |
|---|---|---|
| Borgata Bonus Code ACTION | Bet $20, Get $100 Instantly in Bonus Bets | NJ |
MLB Prediction Markets for Today's Slate
MLB prediction markets are taking the country by storm, and this is yet another way to step onto the diamond tonight. If you're located in a state without legal sports betting, your prayers have been answered!
Many of the best prediction market apps run MLB betting promos of their own, but the dollar amounts are not what you're going to find from most of the sportsbooks. Listen, I'll never turn down free money. I'm just saying, it'd be nice to get a bigger bonus here.
1. Kalshi Promo Code ACTION
The Kalshi promo code ACTION recently changed its welcome offer and now gives new users a $25 bonus after first trading $25. Kalshi is available in 40 states, so a lot of people can climb aboard with one of the best MLB betting promos. We're definitely taking some long shots with this welcome offer. Fire up the HR parlays!
| 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 Promo Code ACTION
The Polymarket promo codeACTION doesn't have as high an initial monetary requirement, but it's a solid platform to use every day. Like Kalshi, Polymarket is available in 40 states and to a large part of the country. All you need to do is deposit $10 and the $20 trading bonus is yours.
| 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, WA, WI, WV, WY |
