Mariners Defeat Red Sox 9-6 at Fenway Park
Tuesday, September 1, 2026, 6:45 PM ET · Fenway Park
Quick answers
Who won Seattle Mariners vs Boston Red Sox?
Seattle Mariners beat Boston Red Sox 9-6 at Fenway Park on September 1, 2026.
Who was favored in Seattle Mariners vs Boston Red Sox?
Boston Red Sox were the favorite at DraftKings, moneyline -120 (about 55% implied). The underdog won.
The Seattle Mariners secured a 9-6 victory over the Boston Red Sox at Fenway Park, clinching the series 2-1. This matchup was notable as it showcased the Mariners' ability to bounce back after a string of losses, while the Red Sox aimed to maintain their strong home performance. The Mariners improved their record to 66-74, while the Red Sox fell to 75-65.
In terms of recent form, the Red Sox had a record of 7-3 over their last ten games, with an average of 4.1 runs scored and 4.4 runs allowed. Their last five games showed a record of 2-3, with an average of 3.2 runs scored and 5.8 runs allowed. At home, the Red Sox maintained a perfect record of 4-0 in their last ten games before this loss.
Conversely, the Mariners were struggling with a 4-6 record in their last ten games, losing their last four. They averaged 4.4 runs scored and 6.7 runs allowed during this stretch. Their away record was particularly poor, with only one win in their last six games.
The two teams had met previously in this series, with the Red Sox winning the first game 9-8 on August 31, 2026. The Mariners had also won two earlier matchups this season, both on June 20 and June 21, 2026, with scores of 6-2 and 5-1 respectively. Historically, the Red Sox had a slight edge in their head-to-head record, winning five out of the last eight meetings.
In terms of injuries, the Red Sox had several key players affected. Ceddanne Rafaela and Adley Rutschman were both listed as day-to-day, while Johan Oviedo, Kutter Crawford, and Zack Kelly were on the 60-day injured list. The Mariners also faced challenges, with Brendan Donovan on the 7-day injured list due to a concussion, and Cole Wilcox, Matt Brash, Will Wilson, and Emerson Hancock on the injured list for longer durations.
The betting market, as reported by DraftKings, had the Red Sox at -120 moneyline odds, with a spread of 1.5 and a total of 7.0 runs. The over was priced at -123, while the under was at 102. This indicated a competitive matchup, with expectations for a close game.
The conditions at Fenway Park were typical for a late summer evening, providing a fitting backdrop for this exciting contest. Fans witnessed a series of scoring plays that highlighted the Mariners' offensive prowess. In the second inning, Rodden's infield single allowed Young to score, followed by Arozarena's home run that brought in Montes and Rodden, pushing the Mariners' lead to 6-1. Montes continued to shine, contributing a single and a home run, while Raleigh also added to the score with a double.
The Red Sox attempted a comeback, with Abreu scoring on an error and White contributing a double that brought in two runs. Jones capped off the scoring for the Red Sox with a home run in the ninth inning, but it was not enough to overcome the Mariners' lead.
Overall, this game was a testament to the Mariners' resilience and ability to capitalize on scoring opportunities, while the Red Sox will need to regroup as they continue their season.
What we said beforehand
The Boston Red Sox will face off against the Seattle Mariners at Fenway Park on September 1, 2026, with the Red Sox leading the series 1-0 after a thrilling 9-8 victory in their previous encounter. This matchup is particularly intriguing as both teams are vying for a stronger position in the American League, and the Red Sox will look to capitalize on their home advantage.
The Red Sox come into this game with a record of 75-63, having won seven of their last ten games, including a recent win against the Mariners. Their recent form shows a mixed bag, with a streak of one win and an average of 4.1 runs scored while allowing 4.4 runs per game over their last ten outings. At home, they have been particularly strong, boasting a 4-0 record in their last four home games.
In contrast, the Seattle Mariners have struggled recently, holding a record of 64-74. They have lost four consecutive games, including their last match against the Red Sox. The Mariners' recent form reveals a record of 4-6 in their last ten games, with an average of 4.4 runs scored but a concerning average of 6.7 runs allowed. Their away record has been particularly poor, with only one win in their last six away games.
Historically, the Red Sox have had the upper hand against the Mariners, winning five of the last eight meetings between the two teams. In addition to their recent victory, the Red Sox also won two previous matchups earlier in the season, showcasing their ability to perform well against Seattle.
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 are also dealing with injury concerns, as Brendan Donovan is on the 7-day IL due to a concussion, and Cole Wilcox, Matt Brash, Will Wilson, and Emerson Hancock are all on the injured list for various reasons.
The betting market reflects the competitive nature of this matchup, with DraftKings setting the odds at Boston Red Sox -120 and Seattle Mariners -101. The spread is set at 1.5, with a total of 7.0 runs for the game. The over odds are -123.0, while the under odds are 102.0, indicating a relatively balanced expectation for scoring.
Weather conditions for the game are expected to be mild, with a temperature around 65 degrees Fahrenheit and a 51% chance of precipitation. Winds could reach up to 14 mph, potentially impacting play.
As fans prepare for this matchup, they should watch for the performance of key players such as Ceddanne Rafaela, who leads the Red Sox with a batting average of .284, and Willson Contreras, who has hit 26 home runs and driven in 79 runs. For the Mariners, Randy Arozarena is a player to keep an eye on, boasting a batting average of .274 with 21 home runs and 62 RBIs. With both teams looking to secure a vital win, this game promises to be an exciting contest.
Odds
| Book | Spread | Total | Moneyline |
|---|---|---|---|
| DraftKings | BOS -120 | 7 o -123 / u +102 | Seattle Mariners -101 · Boston Red Sox -120 |
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: 7-3Streak W14.1 scored · 4.4 allowed per game4-0 at home
- 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
- W6-4vs San Francisco GiantsAug 21
Seattle Mariners
Last 10: 4-6Streak L44.4 scored · 6.7 allowed per game1-5 away
- 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
- W7-5at Milwaukee BrewersAug 19
Standings
| Team | Games behind | Lost | Streak | Win % | Won |
|---|---|---|---|---|---|
| Houston | - | 69 | W1 | .507 | 71 |
| Texas | 2 | 71 | L1 | .493 | 69 |
| Seattle | 5 | 74 | W2 | .471 | 66 |
| Athletics | 17 | 86 | W1 | .386 | 54 |
| Los Angeles | 18 | 87 | L2 | .379 | 53 |
| Tampa Bay | - | 56 | L1 | .597 | 83 |
| New York | 3.5 | 60 | W2 | .571 | 80 |
| Boston | 8.5 | 65 | L2 | .536 | 75 |
| Toronto | 14.5 | 71 | W1 | .493 | 69 |
| Baltimore | 14.5 | 71 | L2 | .493 | 69 |
How the scoring went
- 1st Inning1-0Canzone homered to right center (406 feet).
- 1st Inning1-1Gasper homered to right center (404 feet).
- 2nd Inning2-1Crawford hit sacrifice fly to right, Naylor scored, Young to third.
- 2nd Inning3-1Rodden reached on infield single to second, Young scored, Montes to second.
- 2nd Inning6-1Arozarena homered to left (382 feet), Montes scored and Rodden scored.
- 3rd Inning7-1Montes singled to right, Naylor scored, Young to second.
- 4th Inning8-1Raleigh doubled to left, Rodríguez scored.
- 5th Inning9-1Montes homered to center (407 feet).
- 6th Inning9-2Abreu scored on error, Durbin safe at first on throwing error by third baseman Rodden, Durbin safe at second on error.
- 7th Inning9-4White doubled to left, Gasper scored and Wong scored.
- 9th Inning9-6Jones homered to left (420 feet), Anthony scored.
Win probability
Above the line favours Boston Red Sox, below favours Seattle Mariners.
Venue
- Fenway ParkBoston, Massachusetts
- Attendance35758
- OfficialsWill Little, Derek Thomas, Ryan Wills, Lance Barksdale
Elsewhere
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These two, other days
- Mariners Defeat Red Sox 8-3 at Fenway ParkSep 2, 2026
- Red Sox Edge Mariners in Thrilling Extra-Inning ShowdownAug 31, 2026
- Mariners Secure Victory Over Red Sox at HomeJun 21, 2026
- Red Sox Defeat Mariners 5-1 in Seattle ShowdownJun 20, 2026
- Red Sox Triumph Over Mariners 6-2 in SeattleJun 19, 2026