Blue Jays at Mariners MLB Predictions

The 2025 American League Championship Series has a surprise entry that is making a significant impact on the gambling community.

Specifically, the Seattle Mariners were on nobody’s radar in the preseason future market. But Seattle proved tougher and more capable than anyone believed possible.

In the final month of the season, the Mariners proved superior to the Houston Astros. The Mariners ended the Astros' AL West dynasty in H-Town. Next, Seattle eliminated the Detroit Tigers in the ALDS.

Now comes the ALCS against the AL East champion Toronto Blue Jays. Game 3 is scheduled for Wednesday in Seattle.

Following two games in Toronto, Seattle heads home with a 2-0 series lead.

Blue Jays at Mariners Preview

On Wednesday, October 14, 2025, the Seattle Mariners will host the Toronto Blue Jays at T-Mobile Park in Seattle, WA. The first pitch is scheduled at 8 p.m. ET with television coverage on FS1.

• The Seattle Mariners opened as -137 moneyline favorites at home.

• On the run line, the Mariners are -1.5, +162.

• The Toronto Blue Jays are a +112 moneyline dog.

• The Blue Jays are +1.5, -199 on the run line.

• The Mariners and Blue Jays opened with a total of 7.

• Right-hander Shane Bieber is the scheduled Toronto starter. Bieber was 4-2 with a 3.57 earned run average and 1.02 WHIP in 2025.

• Right-hander George Kirby is the probable starter for Seattle. Kirby was 10-8 with a 4.21 ERA and 1.19 WHIP in 2025.

Blue Jays at Mariners Predictions

• The Blue Jays are the more respected brand among gamblers, given their more recent playoff appearances.

• The Blue Jays have the credibility of winning the AL East and eliminating the New York Yankees 3-1 in the ALDS.

• Wise Guys have taken a liking to the Mariners and their hidden wagering value.

• Seattle is not a public team that draws a lot of betting traffic.

• Seattle has consistently offered more MLB betting value in the stretch drive of the regular season and in the playoffs.

• The casual sector is yet to be sold on the Mariners.

• Seattle is riding a wave of magic that has enhanced its confidence.

• As mentioned earlier, the Mariners are strong at home and in this series.
• Seattle has the superior bullpen and fielding.

Blue Jays at Mariners PRIME Best Bet:  Seattle Mariners 

Blue Jays at Mariners Betting Tips

     Toronto Blue Jays Team Overview

• Toronto had a record of 97-69 and was 40-41 on the road. The Blue Jays were 89-72-5 over the total.

• The Blue Jays ranked 4^th for run production, 3^rd for OPS, and 11^th for home runs.

• Toronto ranked 19^th for earned run average and 16^th for bullpen ERA.

Seattle Mariners Team Overview

• Seattle had a record of 93-74 and was 51-30 at home.

• The Mariners went 91-70-6 over the total.

• Seattle ranked 10^th for run production, 10^th for OPS, 3^rd for home runs, and 4^th for stolen bases.

• The Mariners ranked 13th in earned run average and 9th in bullpen ERA. Seattle was 7^th in MLB for fewest errors committed.

Blue Jays at Mariners Head-to-Head and Key Stats

• The Toronto Blue Jays were the third most profitable team on the board at +1677 money line units and +1494 run line units.

• Toronto was -69 units on the road.

• The Seattle Mariners were a profitable value at +219 moneyline units.

• Seattle was -1841 units on the run line. Seattle was a strong +464 units at T-Mobile Park.

• The Blue Jays have failed to beat the in seven of their most recent 11 away games.

• Eight of Toronto’s last 12 away games went over the total.

• Seattle is printing money at T-Mobile Park.

• The Mariners have seen the payout window in 15 of their last 20 home games.

• The Mariners went under the total in five of their most recent eight home games.

• The Blue Jays got the cash in nine of their most recent 14 games with the Mariners.

• Seven of the last nine games between the Blue Jays and Mariners have gone over the total.

• Specifically in Seattle, the Mariners paid out in six of their most recent seven games with the Blue Jays.

• Six of the last eight games between the Blue Jays and Mariners in Seattle went over the total.

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