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MLB · Final

Mariners Defeat Red Sox 8-3 at Fenway Park

Wednesday, September 2, 2026, 4:10 PM ET · Fenway Park

Quick answers

Who won Seattle Mariners vs Boston Red Sox?

Seattle Mariners beat Boston Red Sox 8-3 at Fenway Park on September 2, 2026.

Who was favored in Seattle Mariners vs Boston Red Sox?

Boston Red Sox were the favorite at DraftKings, moneyline -149 (about 60% implied). The underdog won.

In a decisive matchup at Fenway Park, the Seattle Mariners triumphed over the Boston Red Sox with a final score of 8-3. This victory allowed the Mariners to clinch the series 2-1 against the Red Sox. The Mariners, now holding a record of 66-74, showcased their offensive prowess, particularly in the early innings, while the Red Sox fell to 75-66, continuing their recent struggles.

The game began with the Mariners taking an early lead in the third inning. Julio Rodríguez singled to center, bringing home J.P. Crawford, followed by a two-run single from Josh Naylor that capitalized on a throwing error by Red Sox left fielder Jarren Duran, extending the Mariners' lead to 4-0. The Red Sox managed to respond in the fourth inning when Trevor Story hit a ground-rule double, scoring Adam Duvall, but they could not sustain the momentum.

Seattle continued to dominate, scoring two more runs in the sixth inning with a single from Michael Pereda that brought in two runs, followed by a single from Randy Arozarena, making it 7-1. The Mariners capped their scoring with a double from Canzone, pushing the score to 8-1. The Red Sox attempted a comeback in the seventh inning with a home run from Anthony, followed by a double from White that brought in another run, but it was not enough to close the gap.

In terms of recent form, the Red Sox have had a mixed performance, with a record of 6-4 over their last ten games, but they are currently on a one-game losing streak. They averaged 4.1 runs scored per game while allowing 4.9 runs. Their home record stands at 3-1 in their last four games at Fenway Park. Conversely, the Mariners have recorded a 4-6 record in their last ten games, with a recent win against the Red Sox improving their momentum. They averaged 4.6 runs scored and allowed 6.8 runs during this stretch.

Injury concerns for the Red Sox included Ceddanne Rafaela and Adley Rutschman, both listed as day-to-day with quadriceps and elbow issues, respectively. Additionally, Johan Oviedo, Kutter Crawford, and Zack Kelly are on the 60-day injured list. The Mariners faced their own injury challenges with Brendan Donovan on the 7-day IL for a concussion, and Cole Wilcox, Matt Brash, Will Wilson, and Emerson Hancock also on the injured list with various ailments.

The betting market had the Red Sox as favorites with odds of -149 from DraftKings, while the Mariners were priced at +123. The total for the game was set at 8.5, with the spread at -1.5 in favor of the Red Sox.

Weather conditions at Fenway Park were typical for September, with clear skies and a comfortable temperature, contributing to an enjoyable atmosphere for fans.

Viewers of the game witnessed a strong performance from the Mariners, particularly in their ability to capitalize on Red Sox mistakes and their timely hitting. The Mariners' ability to score in critical moments, especially in the third and sixth innings, was a key factor in their victory. The Red Sox, despite their efforts, struggled to keep pace with the Mariners' offensive output, which ultimately led to their defeat.

What we said beforehand

The Boston Red Sox host the Seattle Mariners in a pivotal matchup at Fenway Park, with the series currently tied at 1-1. This game is particularly interesting as both teams are vying for momentum in the closing stretch of the season. The Red Sox come into this game with a home record of 75-64, while the Mariners are at 65-74 on the road.

In their recent form, the Red Sox have shown some inconsistency, winning only 2 of their last 5 games. Their last five results include a win against the Mariners, 9-8 in a thrilling extra-inning game, followed by a loss to them the next day, 9-6. Overall, the Red Sox have averaged 4.4 runs scored and allowed 6.8 runs in their last five games. At home, they have a record of 3-1 in their last four games, averaging 4.1 runs scored and 4.9 runs allowed over their last ten home games, with a current streak of one loss.

On the other hand, the Mariners have been struggling, with a 1-4 record in their last five games. They recently snapped a losing streak with a win against the Red Sox, 9-6, but prior to that, they suffered three consecutive losses to the Toronto Blue Jays. The Mariners have averaged 4.2 runs scored and 6.8 runs allowed in their last five games, and their away record has been less favorable, with only 1 win in their last 6 away games.

Historically, the Red Sox have a slight edge in the recent head-to-head matchups, holding a 5-4 record against the Mariners over the last two seasons. Their previous meetings this season include two games at Fenway Park, where the Red Sox won one and lost one, and two games in Seattle, where the Mariners won both.

In terms of injuries, the Red Sox have several key players affected. Adley Rutschman is listed as day-to-day with an elbow issue, while Johan Oviedo, Kutter Crawford, Zack Kelly, and Justin Slaten are all on the injured list with elbow or forearm injuries. The Mariners also have notable absences, including Brendan Donovan on the 7-day IL due to a concussion, and Cole Wilcox, Matt Brash, Will Wilson, and Emerson Hancock on the injured list with various ailments.

The market reflects the Red Sox as the favorites, with DraftKings pricing them at -156 on the money line, while the Mariners are at +129. The spread is set at -1.5 for the Red Sox, and the total runs for the game are set at 8.5, with over odds at -106 and under odds at -114.

Weather conditions for the game are expected to be mild, with a temperature of 71°F and wind gusts reaching up to 20 mph, which could influence the game dynamics.

Viewers should watch for Ceddanne Rafaela, who leads the Red Sox with a batting average of .282, and Willson Contreras, who has hit 26 home runs and batted in 79 runs this season. For the Mariners, Randy Arozarena is a key player, boasting a batting average of .273 with 22 home runs and 65 RBIs. This matchup promises to be an exciting contest as both teams look to gain an edge in the series.

Odds

BookSpreadTotalMoneyline
DraftKingsBOS -149 8.5 o -107 / u -112 Seattle Mariners +123 · Boston Red Sox -149

What these prices pay on $100 · What these numbers mean

Injury report

  • Ceddanne RafaelaDay-To-DayQuadricepsBoston Red Sox
  • Adley RutschmanDay-To-DayElbowBoston Red Sox
  • Johan Oviedo60-Day-ILElbowBoston Red Sox
  • Kutter Crawford60-Day-ILForearmBoston Red Sox
  • Zack Kelly60-Day-ILElbowBoston Red Sox
  • Brendan Donovan7-Day ILConcussionSeattle Mariners
  • Cole Wilcox15-Day-ILObliqueSeattle Mariners
  • Matt Brash60-Day-ILLatSeattle Mariners
  • Will Wilson60-Day-ILThumbSeattle Mariners
  • Emerson Hancock15-Day-ILGroinSeattle Mariners

Recent form

Boston Red Sox

Last 10: 6-4Streak L14.1 scored · 4.9 allowed per game3-1 at home

  • L6-9vs Seattle MarinersSep 1
  • W9-8vs Seattle MarinersAug 31
  • L1-16at New York YankeesAug 30
  • W6-0at New York YankeesAug 29
  • L0-1at New York YankeesAug 28
  • L0-4at Miami MarlinsAug 26
  • W7-3at Miami MarlinsAug 25
  • W4-2at Miami MarlinsAug 24
  • W5-4vs San Francisco GiantsAug 23
  • W3-2vs San Francisco GiantsAug 22

Seattle Mariners

Last 10: 4-6Streak W14.6 scored · 6.8 allowed per game1-5 away

  • W9-6at Boston Red SoxSep 1
  • L8-9at Boston Red SoxAug 31
  • L0-7at Toronto Blue JaysAug 30
  • L3-4at Toronto Blue JaysAug 29
  • L1-8at Toronto Blue JaysAug 28
  • W4-1vs Philadelphia PhilliesAug 26
  • W9-2vs Philadelphia PhilliesAug 25
  • L2-19vs Chicago CubsAug 23
  • W6-5vs Chicago CubsAug 22
  • L4-7at Milwaukee BrewersAug 20

Standings

TeamGames behindLostStreakWin %Won
Houston-69W1.50771
Texas271L1.49369
Seattle574W2.47166
Athletics1786W1.38654
Los Angeles1887L2.37953
Tampa Bay-56L1.59783
New York3.560W2.57180
Boston8.565L2.53675
Toronto14.571W1.49369
Baltimore14.571L2.49369

How the scoring went

  1. 3rd Inning1-0We. Wilson scored on Sandoval wild pitch, Crawford to second on wild pitch by Sandoval.
  2. 3rd Inning1-0We. Wilson scored on Sandoval wild pitch, Crawford to second on wild pitch by Sandoval.
  3. 3rd Inning2-0Rodríguez singled to center, Crawford scored, Canzone to second.
  4. 3rd Inning4-0Naylor singled to left, Canzone and Rodríguez scored on throwing error by left fielder Duran, Naylor to second.
  5. 4th Inning4-1Story hit a ground rule double, Abreu scored, Durbin to third.
  6. 6th Inning6-1Pereda singled to center, We. Wilson scored and Young scored, Crawford to second.
  7. 6th Inning7-1Arozarena singled to left, Crawford scored, Pereda to third.
  8. 6th Inning8-1Canzone doubled to center, Pereda scored, Arozarena to third.
  9. 7th Inning8-2Anthony homered to left center (370 feet).
  10. 7th Inning8-3White doubled to center, Gasper scored.

Win probability

Above the line favours Boston Red Sox, below favours Seattle Mariners.

Venue

  • Fenway ParkBoston, Massachusetts
  • Attendance33922
  • OfficialsDerek Thomas, Lance Barksdale, Ryan Wills, Will Little

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Fixture data from the league feeds. The report was written from the recorded facts for this game and nothing else.