Jul 3, 2026
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Read Article Blue Jays vs. Mariners prediction: Toronto favored to win Friday's MLB matchup [7/3/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Toronto Blue Jays vs Seattle Mariners predictions for MLB Friday.
The Seattle Mariners will take on the Toronto Blue Jays, in what is expected to be a close MLB game, at T-Mobile Park on Friday, starting at 10:10 PM ET.
The Mariners will have Luis Castillo (3-6, 4.93 ERA) as their starting pitcher, while the Blue Jays have opted for Dylan Cease (4-4, 3.02 ERA).
Based on updated simulations, Dimers' proven MLB model gives the Blue Jays a slight edge with a 51.4% win probability over the Mariners.
This article offers a closer look at Friday's Blue Jays vs. Mariners matchup, including best bets and picks.
Blue Jays vs. Mariners prediction: Who will win and cover?
Using powerful machine learning and data, we have simulated the outcome of Friday's MLB matchup between the Blue Jays and Mariners, forming part of our MLB predictions coverage.
Our independent predictive model currently gives the Blue Jays a 51.4% chance of defeating the Mariners.
According to our model, the Mariners (+1.5) have a 61.6% chance of covering the run line, while the 7-run over/under has a 56.9% chance of going over,.
Blue Jays vs. Mariners odds [7/3/2026]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Blue Jays | Mariners |
|---|---|---|
| Run Line | -1.5 (+145) | +1.5 (-170) |
| Moneyline | -125 | +108 |
| Total | o7 (-114) | u7 (-105) |
All odds are correct at the time of publication and are subject to change.
Blue Jays vs. Mariners picks and best bet
After matching our predictions against the best current odds, we can reveal our picks for each of the major markets. Plus, find our best bet for the game below:
| Bet Type | Pick | Bet Now |
|---|---|---|
| Run Line | Mariners +1.5 | -170 |
| Moneyline | Mariners | +108 |
| Total | Over 7 | -114 |
According to our MLB best bets, the top play to make on this game is Over 7 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Blue Jays vs. Mariners game-day updates and essential details
Friday's MLB action between the Mariners and Blue Jays at T-Mobile Park is scheduled to commence at 10:10 PM ET.
- Who: Toronto Blue Jays vs. Seattle Mariners
- Date: Friday, July 3, 2026
- Time: 10:10 PM ET/7:10PM PT
- Venue: T-Mobile Park
Conclusion
We predict the Blue Jays, with a 51.4% win probability, will likely beat the Mariners in Friday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.
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