Diamondbacks vs. Red Sox prediction: Boston favored to win Tuesday's MLB matchup [8/18/2026]
Get Arizona Diamondbacks vs Boston Red Sox predictions for MLB Tuesday.

The Boston Red Sox and Arizona dbacks will meet in MLB action at Fenway Park on Tuesday, starting at 7:10 PM ET.
The Red Sox will have Ranger Suarez (4-3, 3.25 ERA) as their starting pitcher, pitting him against Merrill Kelly (8-10, 5.11 ERA) for the Diamondbacks.
Dimers' advanced MLB model projects the Red Sox as the most likely winner in this Diamondbacks vs. Red Sox prediction.
This article offers an expanded analysis of Tuesday's matchup, including best bets and picks.
For more, dive into Ranger Suarez' pitching projections.
Diamondbacks vs. Red Sox prediction: Who will win and cover?
Our famous predictive model currently gives the Red Sox a 56.8% chance of beating the Diamondbacks.
According to our model, the Diamondbacks (+1.5) have a 60.4% chance of covering the run line, while the over/under total of 7.5 runs has a 61.2% chance of going over,.
Diamondbacks vs. Red Sox odds [8/18/2026]
We have researched the best MLB odds in America for this game, which are listed here:
- Run Line: Diamondbacks +1.5 (-138) / Red Sox -1.5 (+133)
- Moneyline: Diamondbacks +156, Red Sox -156
All odds are correct at the time of publication and are subject to change.
Diamondbacks vs. Red Sox 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: Diamondbacks +1.5 @ -138 via DraftKings
- Moneyline: Diamondbacks @ +156 via Novig
- Total: Over 7.5 @ -113 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 sportsbook odds.
Diamondbacks vs. Red Sox game-day updates and essential details
Tuesday's MLB game between the Red Sox and Diamondbacks at Fenway Park is scheduled to start at 7:10 PM ET.
- Who: Arizona Diamondbacks vs. Boston Red Sox
- Date: Tuesday, August 18, 2026
- Time: 7:10 PM ET/4:10PM PT
- Venue: Fenway Park
Conclusion
We predict the Red Sox, with a 56.8% win probability, will likely beat the Diamondbacks in Tuesday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
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