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Mariners vs. Rays prediction: Why Tampa Bay is favored to win Labor Day MLB matchup [9/1/2025]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Seattle Mariners vs Tampa Bay Rays predictions for MLB Labor Day.
The Tampa Bay Rays will face the Seattle Mariners, in what is expected to be a close MLB game, at George M. Steinbrenner Field on Monday, commencing at 7:35PM ET.
The Rays will have Shane Baz (8-11, 5.19 ERA) as their starting pitcher, pitting him against Luis Castillo (8-7, 3.75 ERA) for the Mariners.
Based on the latest simulations, Dimers' advanced MLB model predicts the Rays as the most likely winner of today's game.
For further insights into Monday's matchup, including best bets and picks, visit our interactive Mariners vs. Rays predictions page.
Rays vs. Mariners prediction: Who will win, cover the run line?
Using innovative machine learning and data, we have simulated the outcome of Monday's MLB game between the Mariners and Rays 10,000 times as part of our MLB predictions coverage.
Our leading predictive model gives the Rays a 52% chance of beating the Mariners.
According to our model, the Rays (+1.5) have a 64% chance of covering the run line, while the 8.5-run over/under has an equal 50-50 chance of hitting.
Mariners vs. Rays odds [9/1/2025]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Mariners | Rays |
|---|---|---|
| Run Line | -1.5 (+154) | +1.5 (-181) |
| Moneyline | -106 | -110 |
| Total | o8.5 (-110) | u8.5 (-106) |
All odds are correct at the time of publication and are subject to change.
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Mariners vs. Rays picks and best bets
Our model's strongest edge in today's Mariners vs. Rays matchup is on the total.
Our expert predictions, aligned with the current odds, reveal the best MLB picks and MLB best bets for every game throughout the season.
Unlimited access to our full suite of picks, including this one, is available via Dimers Pro.
Calling Our Shot's free ⚾️ picks
Calling Our Shot produces daily MLB betting content, including the latest predictions featured below.
Mariners vs. Rays game-day updates and essential details
Monday's MLB action between the Rays and Mariners at George M. Steinbrenner Field is scheduled to commence at 7:35PM ET.
- Who: Seattle Mariners vs. Tampa Bay Rays
- Date: Monday, September 1, 2025
- Time: 7:35PM ET/4:35PM PT
- Venue: George M. Steinbrenner Field
Dimers.com's full preview of Monday's Mariners vs. Rays matchup includes our prediction, picks and the latest betting odds.
Before making any Mariners vs. Rays picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.
Conclusion
We predict the Rays, with a 52% win probability, will likely beat the Mariners on Monday.
AI and automation have enhanced this article to quickly deliver accurate Mariners vs. Rays insights, with human oversight ensuring high editorial quality. Our predictions are drawn from 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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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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