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Read Article Royals vs. Red Sox prediction: Boston favored to win Sunday's MLB matchup [9/13/2026]
Updated: | First published:
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Written by Jason Bevilacqua, Head of Content and Communities
Dimers' simulation model projects a 59.8% win probability for the Red Sox at Fenway Park.
MLB action continues on Sunday at 3:05 PM ET as the Kansas City Royals square off with the Boston Red Sox at Fenway Park.
The Red Sox will send Payton Tolle (9-6, 3.15 ERA) to the mound, pitting him against Noah Cameron (9-8, 3.93 ERA) for the Royals.
Dimers' advanced MLB model projects the Red Sox as the most likely winner in this Royals vs. Red Sox prediction.
This article offers an expanded analysis of Sunday's matchup, including best bets and picks.
Royals vs. Red Sox prediction and odds
Using innovative machine learning and statistical analysis, we have re-simulated the result of Sunday's MLB matchup between the Royals and Red Sox, forming part of our MLB predictions coverage.
Our leading predictive model currently gives the Red Sox a 59.8% chance of beating the Royals. According to our model, the Royals (+1.5) have a 57.9% chance of covering the run line, while the over/under total of 7.5 runs has a 56.4% 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: Royals +1.5 (-138) / Red Sox -1.5 (+134)
- Moneyline: Royals +163, Red Sox -170
- Total: Over/Under 7.5 (+108/-113)
All odds are correct at the time of publication and are subject to change.
Model picks and best bet
After matching our predictions 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: Royals +1.5 @ 58¢ via Polymarket
- Moneyline: Royals @ 38¢ via Polymarket
- Total: Over 7.5 @ 48¢ via Polymarket
According to our MLB best bets, the top play to make on this game is Over 7.5 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 action between the Red Sox and Royals at Fenway Park is scheduled to commence at 3:05 PM ET.
- Who: Kansas City Royals vs. Boston Red Sox
- Date: Sunday, September 13, 2026
- Time: 3:05 PM ET/12:05PM PT
- Venue: Fenway Park
Conclusion
We predict the Red Sox, with a 59.8% win probability, will likely beat the Royals 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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