The Cleveland Guardians remain in the thick of the playoff race and the next step of the journey is for their second game on this American League series against the Boston Red Sox on Wednesday, September 23, 2026. First pitch is scheduled for 7:00 p.m. EST with the game airing on ESPN.
Cleveland has the current lead in the AL Central, but the gap in thin and if they drop out of first place they are put right in the mix for the final Wild Card spot. Meaning the stakes couldn’t be higher with each game remaining on the schedule.
Foster Griffin (15-5, 3.67) gets the start on the mound in this matchup with the Red Sox starting Sonny Gray (17-5, 2.82). Griffin’s last start came last Wednesday against the Chicago White Sox where he pitched four innings allowing two runs and striking out five batters in a no decision.
Following the latest injury updates, the Guardians are still without Rhys Hoskins (back) and the Red Sox are without Willson Contreras (hand). As a result, the data analysts at Dimers released their Guardians-Red Sox score prediction after conducting new simulations that took into account every element of matchup data.
The results of Dimers’ simulations were compared to updated sportsbook odds to compile the data-driven Red Sox vs. Guardians preview below.
Guardians vs. Red Sox betting preview
Explore the interactive widget below to discover the current spread, over/under, and moneyline betting odds and probabilities for the Red Sox-Guardians matchup at Fenway Park.
This prediction and best bet for Wednesday’s MLB matchup between the Guardians and Red Sox is from Dimers.com, a dependable source for sports betting predictions.
Check out all the important details on tonight’s game, as well as the best odds sourced from the top sportsbooks in the country.
Game details
Key information on the Red Sox-Guardians matchup, including where the game is and what time it tips off.
- Teams: Cleveland Guardians vs. Boston Red Sox
- Date: Wednesday, September 23, 2026
- Time: 7:00 p.m. ET
- Location: Fenway Park (Boston, Mass.)
- MLB injuries: Check the latest updates to the official NBA injury report
MLB Wednesday Odds
Polymarket is one of the best platforms to trade on ahead of tipoff. Here is the currently outlook of key markets for the Guardians-Red Sox MLB Game.
- Spread: Red Sox -1.5 (38¢), Guardians +1.5 (65¢)
- Moneyline: Red Sox 56¢, Guardians 45¢
- Total: Over/Under 7.5 (50¢/55¢)
The odds and lines presented here are the best available from selected sports betting sites at the time of publication and are subject to change.
Here are our top prediction market options, and available promo codes:
PlatformNFL/MLB Eligible?September ’26 Sign-Up BonusVerified Promo CodesPolymarketYes$50CUSE, MASS, OREGON, SILIVE, CLEVEKalshiYes$25SYRACUSE, OREGONLIVE1, MASSLIVE1, SILIVE, CLEVELANDNovigYes$50SYRACUSE, OREGON, MASSLIVE, CLEVELAND
Expert prediction: Red Sox vs. Guardians
Using trusted data analysis and machine learning, the experts at Dimers have performed 10,000 simulations of Wednesday’s Red Sox vs. Guardians matchup.
According to Dimers’ popular predictive analytics model, the Red Sox are more likely to beat the Guardians at Fenway Park. This prediction is based on the model.
Furthermore, Dimers predicts that the Guardians at +1.5 have a 61.1% chance of covering the spread. The over/under total of 7.5 runs leans 53.8% toward the over.
As always, these predictions and probabilities are accurate at the time of publication but are subject to change.
Guardians vs. Red Sox best bet
Our top pick for Wednesday’s game is to bet on Over 7.5 runs (50¢). With Dimers giving this a 53.8% probability, it offers a nice edge to capitalize on ahead of the showdown.
This betting advice is formulated through world-class modeling and valuable betting intelligence, designed to help you make more informed investments.
Win prediction for Guardians vs. Red Sox
Dimers’ predicted final score for the Cleveland vs. Boston game on Wednesday has the Guardians chance of winning at 42.6%.
This expert prediction is based on each team’s average outcome following 10,000 game simulations, offering a glimpse into the potential outcome.
MLB player props: Wednesday
MLB player prop bets offer a popular way to place wagers on the Guardians vs. Red Sox matchup without having to bet on the outcome of the game itself.
Dimers, armed with the most reliable information available, projects how each team’s leading players will perform at Fenway Park.
Get the latest projections on the top markets for players such as Brayan Rocchio, Steven Kwan, and other Guardians stars.
MLB Wednesday: Guardians vs. Red Sox
Get ready for Wednesday’s matchup between the Guardians and Red Sox, which is scheduled to start at 7:00 p.m. ET. We emphasize that all of the MLB best bets and MLB predictions in this article are based on 10,000 data-driven simulations of the Guardians vs. Red Sox matchup, and they are accurate at the time of publication. They are intended to assist you make better decisions when placing bets at online sportsbooks.
Please note that when engaging in online betting, it is important to exercise responsible gambling practices and seek reputable sources for the latest and most accurate information.
Learn more about our gaming editorial staff.
If you or a loved one has questions and needs to talk to a professional about gambling, call the Ohio Problem Gambling Helpline at 1-800-589-9966 or the National Council on Program Gambling Helpline (NCPG) at 1-800-522-4700 or visit 1800gambler.net for more information. 21+ and present in Ohio. Gambling problem? Call 1-800-Gambler.
If you purchase a product or register for an account through a link on our site, we may receive compensation. By using this site, you consent to our User Agreement and agree that your clicks, interactions, and personal information may be collected, recorded, and/or stored by us and social media and other third-party partners in accordance with our Privacy Policy.
