Claim up to $500 back with the Bet99 promo code for Blue Jays vs Mariners

Toronto Blue Jays designated hitter Vladimir Guerrero Jr. runs to first on a single during the seventh inning of a baseball game against the Detroit Tigers, Saturday, Aug. 28, 2021, in Detroit.

Andrew Wilsher

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Managing Editor of Pickswise. Born and raised in jolly old London, England, with an undying love for the NFL, NBA, soccer and horse racing. A big-time sports bettor who loves futures markets and backing underdogs. Long-suffering New York Jets fan. For Andrew Wilsher media enquiries, please email contact@pickswise.com.

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✍🏼 Bet99 promo code details and instructions for October 2025

If you’ve been waiting for the right time to jump into sports betting, this is it. The Bet99 promo code offer gives Ontario residents a shot to earn up to $500 back in bonus bets; perfect for Game 4 between the Blue Jays and Mariners tonight.

Here’s how it works:

Who qualifies: New users in Ontario, 19+ only
How to claim: Sign up through our link: no promo code needed
Deposit requirement: Minimum deposit of $20
Offer: Get up to $500 back in Bonus Bets if your first wager loses
Eligible markets: Any sport or market on Bet99, including tonight’s MLB showdown

Ready to make your first pick? Join Bet99 now and claim your Bet99 promo code offer before first pitch tonight!

Sign up here ✍🏼 to start your Bet99 experience today.

✅ How to claim your Bet99 bonus for Blue Jays vs Mariners

Claiming the Bet99 welcome offer is quick and easy, and you’ll be ready to wager within minutes when you follow these steps:

JOIN BET99 NOW 🔥

Make a minimum deposit of $20.
Place your first bet on any sport, including Blue Jays vs Mariners.
If your first wager doesn’t win, Bet99 will refund you up to $500 in Bonus Bets.

It’s that simple. No Bet99 promo code is required, so just sign up through our link to activate the offer. ⚡

🗓️ Blue Jays vs Mariners betting odds today, October 20, 2025

Here are the latest Bet99 odds for Game 4 of the ALCS tonight:

Run Line: Blue Jays +1.5 (-115) | Mariners -1.5 (+135)
Money Line: Blue Jays (+145) | Mariners (-165)
Run Total (O/U): Over 8.5 (-110) | Under 8.5 (-110)

The Mariners will look to extend their lead, while the Blue Jays try to keep their playoff hopes alive. Bet on every pitch, prop and total with Bet99’s easy-to-use interface and deep MLB markets.

❓ Other Bet99 sportsbook promotions today

Beyond the $500 back welcome offer, Bet99 also runs several ongoing promotions and features that make it one of Ontario’s top sportsbooks:

Odds Boosts: Daily enhanced odds on popular MLB, NFL, and NCAAF markets.
Parlay Boosts: Get up to 20% more on winning parlays.
Live Betting: Fast, responsive live betting options for every major sport.

Check the promotions page inside the app for more exclusive Bet99 offers this month.

📜 Bet99 promo code key terms & conditions

Before you claim your Bet99 promo code offer, here are the essential terms to keep in mind:

Available only to new users who reside in Ontario.
Must be 19 years or older to participate.
Minimum deposit: $20.
Offer: Up to $500 back in Bonus Bets if your first wager loses.
Bonus validity: Bonus Bets are non-withdrawable and must be used within 7 days.
Responsible Gambling: For help, visit ConnexOntario.ca or call 1-866-531-2600.

💸 Get started with the Bet99 promo code before first pitch

The Bet99 promo code offer is one of the best deals available in Ontario, and you don’t even need an actual code to redeem it. Just sign up, make your first deposit and if your first bet doesn’t win, you’ll get your stake back in bonus bets up to $500.

Don’t wait — Game 4 of the ALCS is set for 8:33 PM ET tonight on FS1, and there’s no better time to jump in than now.

➡️ JOIN BET99 HERE ⬅️ to claim your $500 welcome bonus and back your favorite team tonight.