Oct 18, 2026
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Read Article Rays vs. Guardians prediction: Why Tampa Bay is favored to win Sunday's MLB matchup [10/18/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Dimers' simulation model projects a 52.4% win probability for the Rays at Progressive Field.
The Cleveland Guardians and Tampa Bay Rays are scheduled to meet in MLB action at Progressive Field on Sunday, starting at 5:08 PM ET.
The Guardians will start Parker Messick (0-2, 3.09 ERA), pitting him against Drew Rasmussen (1-0, 1.29 ERA) for the Rays.
Dimers' advanced MLB model gives the Rays a slight edge with a 52.4% win probability over the Guardians.
This article offers a complete Rays vs. Guardians prediction, including best bets and picks.
For more, dive into Parker Messick's pitching projections or Drew Rasmussen's predicted stats.
Rays vs. Guardians prediction and odds
Using powerful machine learning and data analysis, we have re-simulated the outcome of Sunday's MLB matchup between the Rays and Guardians, forming part of our MLB predictions coverage.
Our famous predictive model gives the Rays a 52.4% chance of defeating the Guardians. According to our model, the Guardians (+1.5) have a 62.0% chance of covering the run line, while the over/under total of 6.5 runs has a 56.9% chance of going over.
Latest betting odds
We have researched the best MLB odds in America for this game, which are listed here:
- Run Line: Rays -1.5 (+147) / Guardians +1.5 (-144)
- Moneyline: Rays -127, Guardians +122
- Total: Over/Under 6.5 (+108/-108)
All odds are correct at the time of publication and are subject to change.
Model picks and best bet
After matching our probabilities against the best current odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:
- Run line: Guardians +1.5 @ 59¢ via Polymarket
- Moneyline: Guardians @ 45¢ via Polymarket
- Total: Over 6.5 @ 48¢ via Novig
According to our MLB best bets, the top play to make on this game is Over 6.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the current available odds.
Game info & first pitch details
Sunday's MLB matchup between the Guardians and Rays at Progressive Field is scheduled to commence at 5:08 PM ET.
- Who: Tampa Bay Rays vs. Cleveland Guardians
- Date: Sunday, October 18, 2026
- Time: 5:08 PM ET/2:08PM PT
- Venue: Progressive Field
Conclusion
We predict the Rays, with a 52.4% win probability, will likely beat the Guardians in Sunday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
This article's predictions and probabilities are generated by Dimers' proprietary MLB prediction model. Our editorial team reviews the resulting content for accuracy and presentation before publication.
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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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