MLB- More Betting
Mariners vs. Red Sox Prediction and Odds - May 20, 2022

The Boston Red Sox take on the Seattle Mariners in MLB action at Fenway Park on Friday, commencing at 7:10PM ET.
Michael Wacha (3-0, 1.38 ERA) will get the ball for the Red Sox, pitting him against Robbie Ray (4-3, 4.62 ERA) for the Mariners.
Dimers' best betting picks for Mariners vs. Red Sox, as well as game predictions and best odds, are featured in this article.
Today's Seattle vs. Boston betting analysis is sponsored by PointsBet, which has a great 5x $100 Risk-Free Bets offer for new users.
Who will win Mariners vs. Red Sox?
Based on high-tech computer power and data, Dimers.com has simulated Friday's Mariners-Red Sox MLB matchup 10,000 times.
Dimers' independent predictive analytics model, DimersBOT, gives the Red Sox a 51% chance of beating the Mariners .
More: Full Betting Analysis for Mariners vs. Red Sox
Mariners vs. Red Sox Current Odds
- Run Line: Red Sox +1.5 (-165), Mariners -1.5 (+146)
- Moneyline: Red Sox -105, Mariners +100
- Total: Over/Under 9 (-105/-105)
Run Line, Moneyline and Over/Under
The Red Sox are currently +1.5 underdogs against the Mariners, with -165 at DraftKings Sportsbook the best odds currently available.
For the favored Mariners (-1.5) to cover the run line, FanDuel Sportsbook has the best odds currently on the market at +146.
DraftKings Sportsbook currently has the best moneyline odds for the Red Sox at -105. That means you can risk $105 to win $100, for a total payout of $205, if they get the W.
Meanwhile, Caesars Sportsbook currently has the best moneyline odds for the Mariners at +100, where you can risk $100 to win $100, for a total payout of $200, if they come out on top.
The Over/Under for total runs scored sits at 9 with BetMGM, which currently has the best odds for the Over at -105, while Caesars Sportsbook currently has the best odds for the Under at -105.
As always, check out all the online sportsbooks that are available in your state for the best MLB odds and lines.
According to DimersBOT, the Red Sox (+1.5) are a 63% chance of covering the run line, while the Over/Under total of 9 runs is considered an equal 50-50 chance of hitting.
More: Free Prop Picks
Best Bets for Mariners vs. Red Sox
- Run Line: Red Sox +1.5 @ -165 via DraftKings Sportsbook (63% probability)
- Moneyline: Red Sox @ -105 via DraftKings Sportsbook (51% probability)
- Total: Under 9 @ -105 via Caesars Sportsbook (50% probability)
Dimers' best bets are based on complex simulations and betting intelligence to help you make more informed investments with the legal sportsbooks in America.
Mariners vs. Red Sox Probabilities
Use our widget below to see up-to-date Moneyline, Over/Under and Run Line probabilities and odds for Seattle vs. Boston, and click or tap on See Matchup for more.
Dimers has full betting coverage of Friday's Mariners-Red Sox matchup, including pregame predictions, free betting picks, and live win probabilities.
Remember, DimersBOT updates often, so keep checking this article for the latest betting insights before Mariners vs. Red Sox on Friday May 20, 2022.
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Note: when you click or tap on a link on Dimers that leads to a third-party website that we have a commercial arrangement with (such as a sportsbook), we may earn a referral fee.
Mariners vs. Red Sox 2022 Game Info
Friday's matchup between the Red Sox and Mariners at Fenway Park is scheduled to begin at 7:10PM ET.
- Date: Friday May 20, 2022
- Time: 7:10PM ET / 4:10PM PT
- Venue: Fenway Park
Looking to join an online sportsbook and start betting on MLB? We've listed the best available sign-up offers in every legal betting state.
What other MLB games are on today?
The Mariners and Red Sox aren't the only two MLB teams you can bet on today. DimersBOT never stops and we've got picks and top bets for every single MLB matchup in our MLB Bet Hub page.
Not only do we provide with you top-notch predictions, but we also have recommended bets for the Run Line, Over/Under and Moneyline. Sound good? Hell yeah it does!
Finally, Dimers' Baseball Futures page is our in-house approach to determining who will win the 2022 World Series, with our data-led probabilities matched against the best odds on the market.
