Red Sox vs. Mariners Prediction, Odds, Picks - June 18

Luis Castillo will start for the Seattle Mariners looking to shut down Trevor Story and the Boston Red Sox on Wednesday at 4:10 p.m. ET. Bookmakers list the Red Sox as -120 moneyline favorites, while giving the underdog Mariners +101 moneyline odds to win. Boston is favored on the run line (-1.5). The total is 6.5 runs for the game.

Check out everything you need to know from a betting perspective on the Red Sox-Mariners game, regarding the run line, moneyline and total, plus expert picks.

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Mariners vs. Red Sox Highlights | MLB on FOX

Check out the best moments between the Seattle Mariners and the Boston Red Sox.

Red Sox vs. Mariners Game Information & Odds

• When: Wednesday, June 18, 2025 at 4:10 p.m. ET
• Where: T-Mobile Park in Seattle, Washington
• How to watch on TV: MLB Network, ROOT Sports NW, and NESN

Red Sox vs. Mariners Prediction

• Score Prediction: Mariners 5, Red Sox 4
• Total Prediction: Over 6.5 runs
• Win Probabilities: Red Sox 52%, Mariners 48%

Red Sox vs. Mariners Betting Insights

• The Red Sox have won 24, or 52.2%, of the 46 games they've played as favorites this season.
• Boston has a record of 19-16 in games when oddsmakers favor them by at least -120 on the moneyline.
• The moneyline for this contest implies a 54.5% chance of a victory for the Red Sox.
• The Mariners have been underdogs in 24 games this season and have come away with the win 12 times (50%) in those contests.
• Seattle has a mark of 10-8 in contests where bookmakers favor it by +101 or worse on the moneyline.
• The moneyline set for this matchup implies the Mariners have a 49.8% chance of coming away with a victory in the contest.

Red Sox Recent Betting Performance

• The Red Sox played three of their last 10 games as the moneyline favorite, and won all of them.
• In their last 10 matchups (all 10 of them had set totals), the Red Sox and their opponents combined to hit the over four times.
• The Red Sox's ATS record is 6-4-0 over their past 10 games.

Red Sox Recent Stats

Red Sox Player Insights

• Jarren Duran is the Red Sox best hitter, putting together an average of .261 while also being the team's top run producer, delivering 38 RBI and launching five long balls.
• Duran is 181st in homers and 49th in RBI among all hitters in the majors.
• Ceddanne Rafaela has 11 doubles, two triples, six home runs and 14 walks while batting .247.
• Rafaela is 155th in homers and 131st in RBI on the year.
• Carlos Narvaez is hitting .277 with 15 doubles, six home runs and 26 walks.
• Story has seven doubles, nine home runs and 14 walks while hitting .230.

Red Sox Team Props

Mariners Recent Betting Performance

• The Mariners have played as underdogs in three of their past 10 games and lost each of those contests.
• In their last 10 games with a total, the Mariners and their opponents have combined to hit the over five times.
• The Mariners have three wins against the spread in their last 10 chances.

Mariners Recent Stats

Mariners Player Insights

• Cal Raleigh has put up a team-leading 27 home runs and has driven in 60 runs.
• Among all hitters in MLB, Raleigh is first in home runs and third in RBI.
• Julio Rodriguez is hitting .258 with nine doubles, three triples, 10 home runs and 21 walks.
• Rodriguez is currently 61st in homers and 74th in RBI in the major leagues.
• J.P. Crawford leads the Mariners with a team-high batting average of .294.
• Jorge Polanco has eight doubles, 11 home runs and 13 walks while batting .259.

Mariners Team Props

Mariners vs. Red Sox Highlights | MLB on FOX

Check out the best moments between the Seattle Mariners and the Boston Red Sox.

FOX Sports created this story using technology provided by Data Skrive and data from Sportradar.

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