Mariners vs Red Sox Prediction 9/1/26 MLB Picks Today

In this article, we will formulate a Mariners vs Red Sox Prediction for this MLB matchup on Tuesday, September 1^st in the second game of this series. Let’s take a look at the prediction for this MLB matchup.

Boston Red Sox Preview

The Boston Red Sox have a 75-63 record this season and are sitting in 3rd place of the AL East. They have a 35-32 home record and are coming off a 9-8 home win against the Mariners. They will face the Orioles and the Angels next.

The Boston Red Sox have a .249 batting average this season, .323 OBP, and .405 slugging percentage. Boston’s pitching staff has a 3.60 ERA and 1.23 WHIP. Ceddanne Rafaela is the Red Sox’ best hitter with a .284 batting average. Willson Contreras leads the team in RBI with 79, adding a team-high 26 home runs.

The Red Sox have not yet announced a starting pitcher for this game.

Seattle Mariners Preview

The Seattle Mariners have a 64-74 record this season and are sitting in 3rd place of the AL West. They have a 27-43 road record and are coming off a 9-8 road loss against the Red Sox. They will face the Athletics and the Rangers next.

The Seattle Mariners have a .227 batting average this season, .308 OBP, and .374 slugging percentage. Seattle’s pitching staff has a 4.18 ERA and 1.25 WHIP. Randy Arozarena is the Mariners’ best hitter with a .274 batting average, while leading the team in RBI with 62, adding a team-high 21 home runs.

Bryan Woo (R) is the projected starting pitcher for the Mariners, with a 9-9 record, 4.36 ERA, and 1.10 WHIP.

Seattle Mariners @ Boston Red Sox Betting Trends: September 1, 2026

• Probable Starting Pitcher: TBD

Why the Boston Red Sox will win

• The Mariners have lost each of their last 11 night games against AL East opponents.
• The Red Sox have won each of their last seven night games following a home win.
• The Mariners have failed to cover the run line in 10 of their last 11 night games against AL East opponents.
• The Red Sox have covered the run line in each of their last four home games after going to extra innings.
• The Red Sox have led after 3 innings in six of their last seven night games against the Mariners at Fenway Park.
• The Red Sox have led after 5 innings in 10 of their last 12 night games at Fenway Park against AL opponents.
• The Red Sox have won the first inning in each of their last five Tuesday games as home favorites.

• Probable Starting Pitcher: Bryan Woo      Record this season: 9-9      ERA: 4.36
• Road Record: 2-8
• Last 5 against Red Sox: 2-0

Why the Seattle Mariners will win

• The Red Sox have lost five of their last seven games as favorites against AL opponents.
• The Mariners have won five of their last seven games as underdogs after going to extra innings.
• The Mariners have covered the run line in 11 of their last 12 games against AL opponents following an extra innings loss.
• The Red Sox have failed to cover the run line in each of their last four home games after playing the previous day.
• The Red Sox have trailed after 3 innings in three of their last four night games.
• The Red Sox have trailed after 5 innings in three of their last four night games.

Total Runs Facts

• Eight of the Mariners’ last nine night games as underdogs have gone OVER the total runs line.
• Each of the Red Sox’s last four home games after going to extra innings have gone OVER the total runs line.
• There has been at least one run scored in the first inning in each of the Mariners’ last six games at Fenway Park.
• There has been no run scored during the first inning in nine of Sonny Gray’s last 10 appearances as a starter against the Mariners.

Boston Red Sox Player Prop Facts

• Jarren Duran has hit a home run in each of the Red Sox’s last two night games against AL West opponents that held a losing record.
• Ceddanne Rafaela has recorded at least one hit in each of his last 13 appearances in night games against teams that held a losing record.
• Ceddanne Rafaela ranks T6th in the league in Hits (150) this season.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit at least one home run in each of the Mariners’ last four night games against opponents that held a winning record.
• Randy Arozarena has recorded at least one hit in each of the Mariners’ last 10 road games against AL East opponents that held a winning record.

Matchup/League Facts

• The Red Sox rank 1st in the league for doubles this season (250).
• The Red Sox rank T2nd in the league for home runs allowed this season (135).
• The Mariners rank 30th in the league for runs scored this season (538).
• The Mariners rank 30th in the league for hits this season (1035).

Mariners vs Red Sox Prediction

The Red Sox are 4-1 in their last 5 meetings against the Mariners but have lost their last two of their last three meetings in Boston.

In this Mariners vs Red Sox Prediction, the Red Sox are coming as -120 home favorites. We don’t know yet who is starting for Boston, but I know that Woo is fade material on the road this season, with a 2-8 record and 5.96 ERA. On top of that, the Mariners’ bullpen has been in very bad shape lately, with the Red Sox have the second-best bullpen ERA in baseball and will be facing a Mariners team that has been terrible on the road. Take the Red Sox in this one.