Seattle Mariners vs Boston Red Sox Final — August 31, 2026
Last 10 games
Rest & travelrest and travel
Rest & travelAbout these numbers
Margin of each of the last 10 games this season, oldest to newest (gold = won). Hover a bar for the score margin.
Distance is straight-line from each team's home arena; time-zone change is at game time. Rest counts days since each team's previous game.
The pre-game matchup
The Mariners visited the Red Sox on Monday, August 31 at 6:46 PM ET.
The total closed at 7.5, down from 8 at the open. After removing the vig, the closing moneyline (Mariners +137, Red Sox -159) prices the Mariners at 41% and the Red Sox at 59%.
Written from the numbers available before kickoff.
Result
Final score and result vs the closing line
Seattle Mariners 8, Boston Red Sox 9
Boston Red Sox won by 1.
- Against the closing spread (Boston Red Sox -1.5): Seattle Mariners covered.
- Combined score 17 vs the closing total of 7.5: Over.
- Boston Red Sox closed at -159 on the moneyline (a 59% no-vig market-implied chance).
Market
Closing line and line movement
Mariners +1.5 (-155)
Mariners +1.5 (-167)
Red Sox -165 60%
Red Sox -159 59%
Consensus of US sportsbooks. Open = first line after both teams' previous games; Close = consensus at kickoff. Percentages are the moneyline's no-vig market-implied chances.
Matchup
Head-to-head
The teams have met 22 times since 2023: the Mariners won 10 and the Red Sox 12.
| Date | Score | Line | Total |
|---|---|---|---|
| Jun 21, 2026 | Red Sox 1, Mariners 3 Mariners won | ||
| Jun 20, 2026 | Red Sox 5, Mariners 1 Red Sox won | ||
| Jun 19, 2026 | Red Sox 6, Mariners 2 Red Sox won | ||
| Jun 18, 2025 | Red Sox 3, Mariners 1 Red Sox won | ||
| Jun 17, 2025 | Red Sox 0, Mariners 8 Mariners won |
Meetings since 2023, most recent first. Line and total are the consensus closing numbers where line history is available.
Teams
Seattle Mariners
- Seattle Mariners team stats
- Los Angeles Angels 3, Seattle Mariners 7 (Sep 27)
- Los Angeles Angels 4, Seattle Mariners 8 (Sep 26)
- Los Angeles Angels 7, Seattle Mariners 5 (Sep 25)
Boston Red Sox
More MLB games on August 31, 2026
- San Francisco Giants 7, Atlanta Braves 3 (Aug 31)
- San Diego Padres 5, Cincinnati Reds 0 (Aug 31)
- New York Mets 3, Tampa Bay Rays 2 (Aug 31)
- Miami Marlins 3, Washington Nationals 6 (Aug 31)
- Milwaukee Brewers 3, Chicago Cubs 17 (Aug 31)
- Detroit Tigers 1, Minnesota Twins 11 (Aug 31)
- Athletics 1, Texas Rangers 8 (Aug 31)
- Chicago White Sox 3, Houston Astros 6 (Aug 31)
- Baltimore Orioles 2, Colorado Rockies 1 (Aug 31)
- New York Yankees 1, Los Angeles Angels 10 (Aug 31)
- Philadelphia Phillies 2, Arizona Diamondbacks 1 (Aug 31)
Dig deeper
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See every game's current line on the odds board, or check our fully tracked results.
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