DraftKings MLB Promo: Guess $5, Get $300 on Sport 3 of the ALCS

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For the first time since 2001, the Seattle Mariners return to T-Mobile Park playing in the ALCS. This time they have a 2-0 lead against the Toronto Blue Jays.

The Mariners’ offense poured it on in Game 2, scoring 10 runs on 10 hits. Julio Rodriguez and Jorge Polanco both smashed three-run homers and Josh Naylor added a two-run blast. 

One of the best offenses in the postseason has gone cold in the last two games. In the ALCS, the Blue Jays have scored a total of four runs. Toronto’s offense scored five or more runs in each of their games in the ALDS against the New York Yankees. In two of those games, they scored double-digit runs. 

Before this pivotal Game 3 of the ALCS, DraftKings Sportsbooks is offering new users a chance to win $300 when they place a bet of $5 and their bet wins.

DraftKings

Claim the New User Bonus

1. Click here or on any of the other “Claim Bonus” buttons on this page. This will take you directly to the DraftKings app or website and apply the promo.
2. Click the SIGNUP button to register and verify your account.
3. Deposit $5 or more
4. Place your first wager of $5+ on any eligible market
5. If your bet wins, you receive $300 in bonus bets if you win.

• Works the same on desktop & mobile
• For New Customers only

Verify these different promos from DraftKings

• MLB Bleacher Report YRFI/NRFI 33% Profit Boost: Get a 33% Profit Boost to use on any MLB NRFI/YRFI bet today, brought to you by B/R Betting!
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Mariners vs. Blue Jays Sport Data

• When: Wednesday, October 15, 2025 at 8:08 p.m. ET
• Where: T-Mobile Park in Seattle, Washington
• How to watch on TV: FS1

Odds

Mariners vs. Blue Jays Betting Insights

• The Mariners have entered the game as favorites 116 times this season and won 67, or 57.8%, of those games.
• Seattle is 47-26 this season when entering a game favored by -134 or more on the moneyline.
• The oddsmakers’ moneyline implies a 57.3% chance of a victory for the Mariners.
• The Blue Jays have come away with 44 wins in the 77 contests they have been listed as the underdogs in this season.
• This season, Toronto has been victorious 18 times in 33 chances when named as an underdog of at least +114 or longer on the moneyline.
• The moneyline set for this matchup implies the Blue Jays have a 46.7% chance of coming away with a victory in the contest.

Mariners Current Betting Efficiency

• The Mariners played as the moneyline favorite for five of their last 10 games, and went 1-4 in those matchups.
• Over their last 10 matchups, the Mariners and their opponents combined to hit the over four times (all 10 of the games had set totals).
• The Mariners have a 5-5-0 record against the spread over their past 10 games.

Blue Jays Current Betting Efficiency

• The Blue Jays have played as underdogs in three of their past 10 games and won two of those contests.
• The Blue Jays and their opponents have combined to hit the over five times in their last 10 games with a total.
• The Blue Jays are 7-3-0 ATS over their last 10 games.

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