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Seattle Mariners vs Boston Red Sox Prediction 06/18/2025 Picks
Pick details
Boston (38-37) vs Seattle (37-35)
June 18, 2025 at 04:10 PM EDT
The Line: Betting Odds: Seattle +105 / Boston -125 — Over/Under: 7
The Boston Red Sox are visiting the Seattle Mariners on Wednesday, June 18th at the T-Mobile Park in the third game of this series, with both teams being tied 1-1 wins. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Boston Red Sox vs Seattle Mariners Prediction. We will examine:
The Seattle Mariners recent form and player performance
The Boston Red Sox recent form and player performance
Recent betting trends and streaks involving the Seattle Mariners
Recent betting trends and streaks involving the Boston Red Sox
Recent betting trends in games played between the Boston Red Sox vs Seattle Mariners
A summary that ties it all together and produces a favorable betting outcome for the Boston Red Sox vs Seattle Mariners game
Seattle Mariners Preview
The Seattle Mariners have a 37-35 record this season and are sitting on the second place of the AL West. The Marinershave a 20-18 home record and 38-30 in over/under They are coming off an 8-0 home victory over the Red Sox, and are 4-1 in their last 5 games. Over is 6-4-1 in their last 11 games and they are playing the Twins and the Cubs next.
The Mariners have a .242 batting average this season, .323 OBP and .396 Slugging percentage. Seattle’s pitching staff has a 3.88 ERA and 1.29 WHIP. Julio Rodriguez leads the Mariners in hits with 75, while Cal Raleigh leads the team both in RBI with 60, and in home runs with 27. J.P. Crawford is the team’s best hitter with a .294 batting average.
Luis Castillo (R) is the projected starting pitcher for the Mariners, and he has a 4-4 record, 3.29 ERA and 1.27 WHIP. He has been better at home with a 2.35 ERA across eight home starts, and in his last start he gave up 2 runs in 6 innings of work against the Guardians. Luis Castillo has a 2-2 record with an ERA of 4.91 and 25 strikeouts in 4 appearances versus the Red Sox in his career.
Boston Red Sox Preview
The Boston Red Sox have a 38-37 record this season and are sitting on the 4th place of the AL East. The Red Soxhave a 16-20 road record and are 34-40 in over/under. They are coming off a 0-8 road defeat by the Mariners which snapped their previous six-game winning streak. They are 6-1 to the under in their last 7 and are playing the Giants and the Angels next.
The Red Sox have a .250 batting average this season, .325 OBP and .417 slugging percentage. Boston’s pitching staff has a 3.97 ERA and 1.32 WHIP. Jarren Duran leads the Red Sox with 82 hits, while Rafael Devers leads the team in RBI, with 58, in home runs, with 15, while being the team’s best hitter, with a .272 batting average.
Garrett Crochet (R) is the projected starting pitcher for the Red Sox, and he has a 6-4 record, 2.24 ERA and 1.03 WHIP. He has been excellent on the road, with a 2.33 ERA across eight road starts, and he is coming off a quality start against the Yankees, with just one earned run across 8.1 innings pitched. In his previous start against the Mariners this season, he gave up 4 runs in 5 innings of work. Garrett Crochet has a 0-2 record with an ERA of 4.96 and 27 strikeouts in 5 appearances versus the Mariners in his career.
Why the Seattle Mariners will win
The Red Sox have lost four of their last five games as road favorites.
The home team has won seven of the Mariners’ last eight games.
The Mariners have covered the run line in each of their last nine Wednesday day games as underdogs against American League opponents.
The Red Sox have failed to cover the run line in four of their last five games as road favorites.
The Red Sox have trailed after 3 innings in six of their last seven games as favorites against AL West opponents.
The Mariners have led after 5 innings in each of their last four day games.
Why the Boston Red Sox will win
The Mariners have lost each of their last six home games against AL East opponents following a win.
The Red Sox have won six of their last seven games.
The Mariners have failed to cover the run line in each of their last seven games against the Red Sox following a home win.
The Red Sox have covered the run line in eight of their last nine games against American League opponents following a road loss.
The Red Sox have won the first inning in each of their last three day games.
The Red Sox have led after 3 innings in six of their last seven games against American League opponents that held a winning record.
The Red Sox have led after 5 innings in six of their last seven games against American League opponents that held a winning record.
Total Runs Facts
Twenty-one of the Red Sox’s last 24 games as favorites against the Mariners have gone OVER the total runs line.
Four of the Mariners’ last five day games after playing the previous day have gone UNDER the total runs line.
The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Mariners’ last six day games at T-Mobile Park.
The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Red Sox’s last four day games.
Matchup/League Facts
The Mariners rank T28th in the league for doubles this season (96).
The Mariners are one of only three teams in the league to rank top 10 in both steals and home runs this season.
The Red Sox rank 1st in the league for doubles this season (141).
The Red Sox rank 2nd in the league for hits this season (648).
Boston Red Sox vs Seattle Mariners Prediction
The Mariners are 3-2 in their 5 meetings against the Red Sox this season, but both teams are tied 6-6 wins in their last 12 meetings. Under is 4-1 in their last 5 meetings in Seattle. Â
In this Boston Red Sox vs Seattle MarinersPrediction, the Red Sox are coming as -125 road favorites. Both teams have almost identical overall records, but the Mariners have slightly above average at home, while the Red Sox are below average on the road. Both pitchers have been excellent this season with a combined 5.53 ERA, and both teams are on the top half of the league in bullpen ERA. Boston is weaker against righties, as is Seattle against lefties, so I expect a low-scoring affair today with two sharp pitchers on the mound. Take the under 7 runs.
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