Get Up to $1,500 Back in Bonus Bets for Astros vs Mariners with BetMGM Bonus Code WSNSPORTS

The Houston Astros travel to Seattle to face the Mariners this Monday, April 13, 2026. If you are looking to get in on the action, the BetMGM Bonus Code WSNSPORTS is currently available for new players. Depending on where you are located, you can access different promotions to help you get started with your first wager on the diamond.

BetMGM Bonus Code WSNSPORTS for Monday 04.13.2026

BetMGM is currently running two separate promotions for the start of the 2026 baseball season. It is important to know that these offers are region restricted, so the deal you get depends entirely on the state where you are physically located.

• Offer 1: You can get up to $1,500 in bonus bets if your first wager does not win. This offer is available for players in AZ, CO, IL, IN, IA, KS, KY, LA, MD, MA, MO, MS, OH, PR, TN, VA, DC, WY, and ON.

• Offer 2: You can Bet $10 and Get $150 in bonus bets if your first bet wins. This specific offer is only available to residents in MI, NJ, PA, and WV.

To claim either of these, make sure to enter the BetMGM Bonus Code WSNSPORTS when you are setting up your new account.

BetMGM Bonus Code Terms and Conditions

Before you sign up and start betting on the Astros or Mariners, keep these key rules in mind:

• You must be at least 21 years old (19+ in Ontario).

• A first-time deposit of at least $10 is required to trigger the offer.

• For the $1,500 offer, your first bet must be a real-money wager. For the $150 offer, a minimum $10 bet is required.

• Bonus bets usually expire 7 days after they are credited to your account.

• Bonus bets cannot be withdrawn as cash and must be wagered through at least once.

Follow our link and get more info in our BetMGM Sportsbook review.

Featured Matchup: Astros vs Mariners

This early-season matchup between the Houston Astros and the Seattle Mariners carries plenty of weight in the AL West. Both teams have started the 2026 campaign with strong rotations, and every divisional game matters when you are chasing a postseason spot. The Astros are looking to rely on their veteran lineup to find gaps in the Mariners' elite pitching staff.

Seattle has been tough to beat at home so far this year, making this a great game to use the BetMGM Bonus Code WSNSPORTS. With the crowd behind them, the Mariners' young arms will be tested by a Houston offense that rarely beats itself. It should be a tight, low-scoring battle that comes down to the bullpens in the late innings.

BetMGM Odds for Astros vs Mariners

Odds taken on April 13, 2026, at 10:00 AM ET. Please note that betting odds may change before the game starts.

Use WSNSPORTS at BetMGM for $1,500 Bonus

Optimal Use of the BetMGM Bonus Code for Astros vs Mariners

When using the BetMGM Bonus Code, it is smart to think about the type of offer you are using. Since these offers provide bonus bets if a wager loses or as a reward for a win, you want to pick a market that fits your comfort level.

• For the $1,500 First Bet Offer: Some bettors prefer taking a shot on a "plus-money" underdog, like the Mariners Moneyline at -105. If the Mariners win at home, you get the cash profit. If they lose, the bonus bets provide a second chance to try again.

• For the Bet $10, Get $150 Offer: Since this requires a win to trigger, you might look at a safer "prop" bet or a spread like Mariners +1.5. While the payout is lower, the goal here is to win the bet to unlock those bonus credits.

• Consider the Total: If both starting pitchers are on their game, the Under 8.0 might be a calculated way to use the promotion in a game that looks like a classic pitchers' duel.

How to Watch Astros vs Mariners

• Date & Time: Monday, April 13, 2026, at 04:10 PM ET

• Location: T-Mobile Park, Seattle, WA

• TV Channel: Root Sports Northwest, Space City Home Network

• Streaming: MLB.TV, FuboTV