Seattle Mariners vs Boston Red Sox | September 1, 2026

Scheduled September 1, 2026 • Fenway Park, Boston

Seattle Mariners

64-70

Boston Red Sox

73-60

MLB PREVIEW • September 1, 2026 Featured Matchup

MLB Matchup: Seattle Mariners (64-70) travels to play Boston Red Sox (73-60) at Fenway Park, Boston.

Seattle Mariners

Visiting Side

Record 64-70

Boston Red Sox

Home Side

Record 73-60

Team Matchup Analysis Tale of the Tape

Circled Game Matchup Projection

Seattle Mariners

92%

Boston Red Sox

Projected Score SEA 3.5 - BOS 4.8

Data Confidence High

Data Used 5 of 6 categories

Boston Red Sox has a stronger overall season performance.
Boston Red Sox has a stronger home record.
Boston Red Sox boasts a more productive batting lineup.

Seattle Mariners

STAT

Boston Red Sox

47.8% Win % 54.9%

64-70 Overall Record 73-60

37-31 Home Record 34-32

27-39 Away Record 39-28

3.93 Runs / G 4.55

.228 Team BA .251

.684 Team OPS .731

4.10 Team ERA 3.48

1.24 WHIP 1.22

4429 AB (At Bats) 4430

526 R (Runs) 600

1012 H (Hits) 1110

158 2B (Doubles) 241

13 3B (Triples) 22

155 HR (Home Runs) 136

507 RBI (Runs Batted In) 573

1661 TB (Total Bases) 1803

450 BB (Walks) 425

1159 SO (Strikeouts) 1067

93 SB (Stolen Bases) 97

.228 AVG .251

.309 OBP .324

.375 SLG .407

.684 OPS .731

525.1 RC (Runs Created) 597.9

.090 BB/PA .085

0.39 BB/K 0.40

3.91 P/PA 3.83

326 XBH (Extra Base Hits) 399

5001 PA (Plate Appearances) 5009

28.6 AB/HR 32.6

4.10 ERA 3.48

1.24 WHIP 1.22

1184.0 IP (Innings) 1176.1

1117 H (Hits Allowed) 1057

539 ER (Earned Runs) 455

156 HR (HR Allowed) 127

346 BB (Walks Allowed) 379

1143 K (Strikeouts) 1131

8.7 K/9 (K Per 9) 8.7

64 W (Wins) 73

70 L (Losses) 59

30 SV (Saves) 37

0.985 FP (Fielding %) 0.986

69 E (Errors) 68

158 DP (Double Plays) 241

4718 TC (Total Chances) 4750

3552 PO (Putouts) 3529

1097 A (Assists) 1153

35.3 RF (Range Factor) 35.8

Situational Context Environment

Venue Advantage Host Boston Red Sox plays on familiar turf at Fenway Park, Boston.

Conditions Conditions: Dome/Indoor

🎯

Circled Game Takeaway

Circled Game Analytical Outlook

Why Seattle Mariners Could Win

Seattle Mariners brings a Team ERA of 4.10 and Batting Average of .228 into the matchup.

Why Boston Red Sox Could Win

Boston Red Sox counters with a Team ERA of 3.48 and Batting Average of .251.

Deciding Factor

The deciding factor will be if Boston Red Sox's superior pitching can dominate the matchup.

Game Details

Fenway Park, Boston

Dome/Indoor • 74°F

Attendance

N/A

Closing Odds

Line: NL | O/U: TBD

Pitching & Leaders

Team Batting Average

Team Home Runs

Team Batting Average

Team Home Runs

Consensus Pool

Circle Crowd Pick Meter

Live Poll

Seattle Mariners (49.6%) Boston Red Sox (50.4%)

Total Submissions: 53 circles

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