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Seattle Mariners

SEA · AL West · 2026
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Roster construction

Metric Value Lg avg Diff Rank Percentile
Plate appearances given to sub-replacement hitters 897 874 +22 19th of 30
Share of plate appearances given to sub-replacement hitters 14.5% 14.9% −0.4% 15th of 30
WAR bled by sub-replacement hitters -3.9 -2.8 −1.2 25th of 30
Count of sub-replacement hitters 8 6 +1 22nd of 30
Batters faced by sub-replacement pitchers 914 1074 −160 16th of 30
Share of batters faced by sub-replacement pitchers 15.8% 17.4% −1.6% 18th of 30
WAR of the club's best position player 4.2 4.4 −0.2 16th of 30
Combined WAR of the club's three best position players 8.4 10.4 −2.0 24th of 30
Combined WAR of the club's five best position players 12.3 14.4 −2.1 23rd of 30
Total position-player WAR 14.6 17.7 −3.1 24th of 30
Total pitching WAR 12.3 13.8 −1.4 19th of 30
Share of position-player WAR from the top three 57.5% 61.6% −4.1% 17th of 30
Concentration of WAR across the lineup 0.38 0.44 −0.05 24th of 30
Position players with a 2+ WAR season 4 3 — 10th of 30
Position players with a 4+ WAR season 1 0 — 5th of 30
Hitters used 27 23 +3 4th of 30
Plate-appearance-weighted batting age 29.1 28.3 +0.8 9th of 30
Plate appearances given to hitters 25 and under 871 1399 −528 24th of 30
Share of plate appearances given to hitters 25 and under 14.1% 23.8% −9.7% 24th of 30
Plate appearances given to hitters 35 and older 328 366 −38 15th of 30

Staff shape

Metric Value Lg avg Diff Rank Percentile
Pitchers used 27 31 −4 26th of 30
Rotation WAR 11.9 12.0 −0.1 15th of 30
Bullpen WAR 2.0 5.1 −3.1 25th of 30
Combined WAR of the club's three best starters 8.6 8.3 +0.3 12th of 30
Share of innings thrown by starters 62.5% 71.2% −8.7% 27th of 30
Quality starts 63 52 +10 6th of 30
Blown saves 30 23 +6 23rd of 30

Results

Metric Value Lg avg Diff Rank Percentile
Run differential -57 0 −57 24th of 30
Run differential per game -0.38 0.00 −0.38 24th of 30
Runs scored per game 4.06 4.49 −0.43 28th of 30
Runs allowed per game 4.44 4.49 −0.05 15th of 30
Winning percentage .470 .500 −.030 21st of 30
Pythagorean winning percentage .459 .501 −.042 24th of 30
Wins above Pythagorean expectation 1.6 -0.2 +1.8 11th of 30
Winning percentage in one-run games .500 .499 +.001 16th of 30
Winning percentage in games decided by five or more .429 .499 −.070 25th of 30
Winning percentage in extra innings .467 .508 −.041 21st of 30
Home winning percentage .533 .529 +.004 13th of 30
Road winning percentage .405 .471 −.066 25th of 30
Winning percentage within the division .571 .502 +.069 7th of 30
Longest winning streak 8 6 +1 6th of 30

Batting

Metric Value Lg avg Diff Rank Percentile
Team Games 149 148 — 2nd of 30
Team Plate Appearances 5586 5627 −41 20th of 30
Team At Bats 4948 4998 −50 26th of 30
Team Runs 605 668 −63 28th of 30
Team Hits 1145 1219 −74 29th of 30
Team Doubles 184 230 −46 30th of 30
Team Triples 16 19 −3 21st of 30
Team Home Runs 171 170 — 15th of 30
Team Runs Batted In 583 638 −55 27th of 30
Team Stolen Bases 101 100 — 12th of 30
Team Walks 503 500 +2 14th of 30
Team Strikeouts 1295 1242 +52 23rd of 30
Team Walk Rate 9.0% 8.9% +0.1% 14th of 30
Team Strikeout Rate 23.2% 22.1% +1.1% 24th of 30
Team Batting Average .231 .244 −.013 29th of 30
Team On-Base Percentage .312 .319 −.007 22nd of 30
Team Slugging Percentage .379 .401 −.022 28th of 30
Team On-Base Plus Slugging .691 .719 −.028 28th of 30

Pitching

Metric Value Lg avg Diff Rank Percentile
Team Wins 70 74 −4 20th of 30
Team Losses 79 74 +4 21st of 30
Team Saves 33 38 −5 22nd of 30
Team Games 149 148 — 2nd of 30
Team Games Started 149 148 — 2nd of 30
Team Innings Pitched 1316.1 1318.1 −2.0 19th of 30
Team Innings per Game 8.8 8.9 −0.1 22nd of 30
Team Strikeouts 1266 1242 +23 12th of 30
Team Strikeouts per 9 Innings 8.7 8.5 +0.2 11th of 30
Team Walks per 9 Innings 2.7 3.4 −0.7 2nd of 30
Team Earned Run Average 4.19 4.19 — 17th of 30

Rank is among the MLB clubs with a value for that metric, best first. Descriptive metrics (roster age, WAR concentration) are ranked but not colored — for them, "high" isn't "good".