Boston Red Sox (38-37) vs. Seattle Mariners (37-35)
June 18, 2025 4:10 pm EDT
The Line: Seattle Mariners 0.0001 / Boston Red Sox 0.0001; Over/Under: 0.0001
(Get latest betting odds)
In this article, we will formulate a Mariners vs Red Sox prediction for this MLB game on Wednesday, June 18, at T-Mobile Park in Seattle, Washington. Let’s take a look at the prediction for this MLB matchup.
Boston Red Sox Betting Preview
The Boston Red Sox (38-37, 16-20 Away) were on a six-game winning streak after sweeping the New York Yankees and opening this series against the Mariners with a win. However, they couldn’t make it seven in a row as Seattle stopped them with an 8-0 victory in Game 2. Walker Buehler took the loss after allowing eight runs on eight hits with two strikeouts and four walks in 3.1 innings.
This year, the Red Sox average 4.80 runs per game (6th in the MLB) on a .252/.326/.421 triple-slash. When it comes to pitching, the Red Sox’s staff has a 3.91 ERA (17th) and 1.31 WHIP (21st). Jarren Duran leads the Red Sox with a .261 batting average, five home runs, and 38 RBI this season.
The projected starting pitcher for the Red Sox is Garrett Crochet, who is 6-4 in 15 starts this season, with a 2.24 ERA and 1.03 WHIP in 96.1 innings.
Seattle Mariners Betting Preview
The Seattle Mariners (37-35, 20-18 Home) were on a three-series losing streak but managed to avoid the fourth straight defeat with a win over the Cleveland Guardians. The Mariners entered this series against Boston with a defeat, but bounced back with an 8-0 victory on Tuesday. Cal Raleight hit a grand slam and tied his career-best six RBI to lead his team, while Bryan Woo got the win after allowing no runs on one hit with six strikeouts and two walks across 7.0 innings of work.
This season, the Mariners’ average 4.34 runs per game (12th in the MLB) on a .242/.322/.395 triple-slash. When it comes to pitching, the Mariners’ staff has a 3.93 ERA (18th) and 1.30 WHIP (19th). Cal Raleigh leads the Mariners with a .266 batting average, 27 home runs, and 60 RBI this season.
Luis Castillo will take the mound for the Mariners on Wednesday. The 32-year-old right-hander has a 4-4 record in 14 starts this year with a 3.29 ERA and 1.27 WHIP in 79.1 innings.
Total Runs Facts
- Seven of the Red Sox’s last eight road games against American League opponents have gone OVER the total runs line.
- Four of the Mariners’ last five games as underdogs against American League opponents have gone UNDER the total runs line.
- The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Mariners’ last five games as underdogs against American League opponents.
- The ‘Inning 1 UNDER 0.5 runs’ market has hit in five of the Red Sox’s last six games as road favorites against AL West opponents.
Matchup/League Facts
- The Mariners rank 4th in the league for steals this season (75).
- The Mariners rank T26th in the league for triples this season (4).
- The Red Sox rank 28th in the league for strikeouts against this season (697).
- The Red Sox are one of only three teams in the league to rank top 10 in both steals and home runs this season.
Mariners vs Red Sox Prediction
The teams have traded wins in the past couple of years, each recording five in the previous ten H2H encounters. This season, Seattle won three out of five meetings. Four of those five duels produced 7+ runs, and I am backing Over 6.5 again. Garrett Crochet is perhaps Cy Young material, but he is not untouchable, which was evident in his previous starts against the Mariners, when he allowed four runs in 5.0 innings in a loss. Luis Castillo surrendered multiple runs in three of his last four starts and allowed six in his previous two. I expect Boston to bounce back offensively after scoring zero runs on Tuesday. Back the Over.
