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Rays vs. Mariners Prediction: Seattle Predicted to Win Friday's MLB Matchup [8/8/2025]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Our expert prediction for Friday's Tampa Bay Rays vs Seattle Mariners matchup.
The Seattle Mariners and Tampa Bay Rays will meet in MLB action at T-Mobile Park on Friday, starting at 9:40PM ET.
The Mariners will send Luis Castillo (8-6, 3.22 ERA) to the mound, pitting him against Drew Rasmussen (9-5, 2.81 ERA) for the Rays.
Based on updated simulation results, Dimers' advanced MLB model (see Dimers Pro for full access) predicts the Mariners as the most likely winner of today's game.
For further insights into Friday's matchup, including best bets and picks, visit our interactive Rays vs. Mariners predictions page.
Mariners vs. Rays Prediction: Who Will Win, Cover the Run Line?
Using innovative machine learning and data analysis, we have simulated the outcome of Friday's MLB matchup between the Rays and Mariners 10,000 times as part of our MLB predictions coverage.
Our famous predictive model currently gives the Mariners a 56% chance of beating the Rays.
According to our model, the Rays (+1.5) have a 64% chance of covering the run line, while the over/under total of 7 runs has a 54% chance of going over.
Rays vs. Mariners Odds [8/8/2025]
We have researched the best MLB odds in America for this game, which are listed here:
| Bet Type | Rays | Mariners |
|---|---|---|
| Run Line | +1.5 (-206) | -1.5 (+172) |
| Moneyline | +110 | -130 |
| Total | o7 (-105) | u7 (-114) |
All odds are correct at the time of publication and are subject to change.
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Rays vs. Mariners Picks and Best Bets
Our model's biggest edge in today's Rays vs. Mariners matchup is on the run line.
Our expert predictions, matched against the current odds, reveal the best MLB picks and MLB best bets for every game throughout the season.
Unlimited access to our complete suite of picks, including this one, is available via Dimers Pro.
Calling Our Shot's Best Bets Today
Calling Our Shot produces daily MLB betting content, including the latest free picks featured below.
Rays vs. Mariners Game-Day Updates and Essential Details
Friday's MLB matchup between the Mariners and Rays at T-Mobile Park is scheduled to start at 9:40PM ET.
- Who: Tampa Bay Rays vs. Seattle Mariners
- Date: Friday, August 8, 2025
- Time: 9:40PM ET/6:40PM PT
- Venue: T-Mobile Park
Dimers.com's in-depth preview of Friday's Rays vs. Mariners matchup includes our prediction, picks and the latest betting odds.
Before making any Rays vs. Mariners picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.
Conclusion
We predict the Mariners, with a 56% win probability, will likely beat the Rays on Friday.
AI and automation have enhanced this article to quickly deliver accurate Rays vs. Mariners insights, with human oversight ensuring high editorial quality. Our predictions are based on the latest data to help you make informed decisions. For additional resources and advice on responsible gambling, please call 1-800-GAMBLER.
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Keep up with the latest MLB news and MLB parlay picks throughout the season. Plus, our World Series odds provide the latest projections for the World Series, American League, National League and each division.
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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