$1500 Bonus Bets If Lose on Cardinals vs Royals MLB: Use BetMGM Code BTSLINES

Written By John Carlo Villaruel | Published at June 16, 2026
$1500 Bonus Bets If Lose on Cardinals vs Royals MLB: Use BetMGM Code BTSLINES

How would you like to get up to $1,500 in bonus bets to use on this weekend’s big MLB clash between the Cardinals and the Royals? Sounds great, right? Well, that’s precisely what’s on offer if you join BetMGM sportsbook today using our exclusive BTSLINES bonus code. In this short guide, we will outline exactly how this tasty welcome bonus works, plus give you a few pointers on how to use your reward on BetMGM’s superb MLB same game parlay markets.

BetMGM Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win
Bet Now BetMGM Promo
Gambling problem? Call 1-800-GAMBLER or 1-800-MY-RESET (Available in the US) 877-8-HOPENY or text HOPENY (467369) (NY) 1-800-327-5050 (MA), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). 21+ only. Please Gamble Responsibly. See BetMGM.com for Terms. First Bet Offer for new customers only (if applicable). Subject to eligibility requirements. Bonus bets are non-withdrawable. In partnership with Kansas Crossing Casino and Hotel. Promotional offers not available in Mississippi, New York, Ontario, or Puerto Rico.

Creating Your New BetMGM Account and Claiming Your Welcome Offer

Here’s how to join BetMGM and receive your new player bonus:

  1. Click the banners surrounding this article to access the BetMGM website.
  2. Hit the Sign Up button, then complete the registration form.
  3. Our exclusive BTSLINES bonus code should already be entered in the text box on the sign up page, but if it’s not there, make sure you type it in.
  4. After submitting the form, go to your BetMGM account page and deposit at least $10 into your account.
  5. Place a bet of between $10 and $1,500 on any sports betting market.
  6. If your bet is a winning one, you will instantly make a profit and the offer will be over.
  7. If your wager does not win, BetMGM will award you bonus bets equal to the sum of your losing wager.
  8. These bonus bets need to be used within seven days on any BetMGM sports betting market. Any profits you make from winning bets will be yours to keep.

Who can claim this BetMGM Welcome Offer?

To qualify for this BetMGM new player deal, you need to be at least 21 years old and located in one of these US states: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, NC, NV, OH, TN, VA.

If you are located in New Jersey, Pennsylvania, Michigan or West Virginia, you can claim an alternative welcome package that gives you up to $150 in bonus bets if your initial $10+ wager is a winning one.

Cardinals vs Royals: Same Game Parlay Options at BetMGM

If you want to use your bonus bets on the Cardinals vs Royals matchup, BetMGM’s same-game parlays offer a great way of adding a bit of extra value to your wagers. These pre-built bets combine a totals/spreads selection with the moneyline to create a same-double at an enhanced price. Alternatively, you can build your own same-game parlays, or choose from the hundreds of other MLB markets available at BetMGM.