Seattle Mariners vs Toronto Blue Jays Prediction 10/20/2025 Today’s MLB Picks

The Seattle Mariners and the Toronto Blue Jays meet Monday in MLB action from Rogers Centre. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Seattle Mariners vs. Toronto Blue Jays prediction.

Starting Pitching Matchup

The Seattle Mariners will send out George Kirby for the start here and Kirby is 0-1 with a 7.07 ERA and 18 strikeouts in the postseason. Shane Bieber will get the start for Toronto here and Bieber is 1-0 with a 4.15 ERA and 10 strikeouts in the postseason.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to advance after failing in game six by a final score of 6-2 on Sunday.

Mariners Trying To Make First World Series In Franchise History

Jorge Polanco has 125 hits including 30 doubles, 26 home runs and 78 RBIs while Cal Raleigh has 147 hits with 24 doubles, a team-high 60 home runs and 125 RBIs. Randy Arozarena has 146 hits with 32 doubles, 27 home runs, 76 RBIs and 31 stolen bases. Julio Rodriguez also has 174 hits with 31 doubles, 4 triples, 32 home runs, 95 RBIs and 30 stolen bases. J.P Crawford has 151 hits with 24 doubles, 12 home runs and 58 RBIs.

Toronto Blue Jays Recap

The Toronto Blue Jays come into this game looking to complete the series comeback after forcing game seven with their win in Sunday’s matchup.

Blue Jays Looking For First World Series Appearance Since 1993

George Springer has 154 hits and Bo Bichette has 181 hits with Springer adding 32 home runs, a triple, 27 doubles and 84 RBIs while Bichette has 44 doubles, 18 home runs and 94 RBIs. Andres Gimenez has added 69 hits with 11 doubles and 7 home runs and 35 RBIs this season along with 12 stolen bases. Vladimir Guerrero Jr. also has 23 homers, 34 doubles and 84 RBIs while Springer also has a .309 batting average and 111 strikeouts up to this point in the year. Addison Barger’s chipped in 32 doubles with 21 home runs and 74 RBIs and Ernie Clement’s added 35 doubles as part of his 151 hits this season.

Seattle Mariners @ Toronto Blue Jays Betting Trends: October 20, 2025

• Probable Starting Pitcher: Shane Bieber      Record this season (inc. playoffs): 5-2      ERA: 3.67
• Home Record: 2-1
• Last 5 against Mariners: 2-1

Why the Toronto Blue Jays will win

• The Blue Jays have won each of their last eight home games following a home win.
• The Mariners have lost each of their last five road games against AL East opponents following a loss.
• The Blue Jays have covered the run line in each of their last six home games following a home win.
• The Mariners have failed to cover the run line in each of their last five road games against AL East opponents following a loss.
• The Mariners have trailed after 3 innings in seven of their last eight night games against AL East opponents.
• The Blue Jays have led after 5 innings in seven of their last eight home games.

• Probable Starting Pitcher: George Kirby      Record this season (inc. playoffs): 10-9      ERA: 4.50
• Road Record: 5-4
• Last 5 against Blue Jays: 0-2

Why the Seattle Mariners will win

• The Mariners have won each of their last six games as underdogs against American League opponents following a loss.
• The Blue Jays have lost each of their last four games as favorites against AL West opponents following a win.
• The Mariners have covered the run line in each of their last six games as underdogs against American League opponents following a loss.
• The Blue Jays have failed to cover the run line in eight of their last nine games as favorites against AL West opponents following a win.
• The Blue Jays have trailed after 5 innings in seven of their last eight Monday games against AL West opponents that held a winning record.

Total Runs Facts

• Ten of the last 11 games between the Mariners and Blue Jays have gone OVER the total runs line.
• Eight of the Mariners’ last nine games against AL East opponents have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in seven of the Mariners’ last eight games as road underdogs.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in five of the last six games between the Mariners and Blue Jays at Rogers Centre.

Toronto Blue Jays Player Prop Facts

• Vladimir Guerrero Jr. has hit a home run in each of the Blue Jays’ last three night games.
• Shane Bieber has recorded five or more strikeouts in 15 of his 16 previous appearances with his team as a favorite against AL West opponents.
• Shane Bieber has recorded a win in four of his last five appearances against AL West opponents.
• Bo Bichette has recorded a Double in each of his last five appearances against AL opponents that held a winning record.
• Bo Bichette has recorded at least one hit in each of his last 21 appearances with the Blue Jays as home favorites against AL opponents.
• George Springer ranks 2nd amongst qualified players for On Base Percentage (.399) this season.

Seattle Mariners Player Prop Facts

• Julio Rodriguez has hit a home run in three of the Mariners’ last five road games against AL East opponents.
• George Kirby has recorded four or more strikeouts in each of his last 18 appearances in night games against AL teams that held a winning record.
• George Kirby has recorded a win in three of his last four road appearances against AL opponents that held a winning record.
• Mitch Garver has recorded at least one hit in each of his last seven appearances with the Mariners as road underdogs against AL East opponents.
• Cal Raleigh ranks 1st in the league in Home Runs (60) this season.

Matchup/League Facts

• The Blue Jays rank 1st in the league for hits this season (1461).
• The Blue Jays rank 1st in the league for batting average this season (.265).
• The Mariners rank 29th in the league for doubles this season (234).
• The Mariners rank T29th in the league for triples this season (9).

Seattle Mariners vs. Toronto Blue Jays Prediction

I’m on the under here. I think this game takes the shape of a true game seven between two teams that haven’t been this far either ever, or in a long, long time and two teams that have had to rely on pitching for the better part of the season and the playoffs. I think we get a low-scoring game here so give me the under.