The Seattle Mariners went 90-72 in 2021, a .556 winning percentage — 10th of 30 record in baseball. They scored 697 runs and allowed 748, a run differential of -51. The offence ranked 22nd of 30 in MLB for runs scored, while their 4.31 staff ERA was 16th of 30. Their 93 team wRC+ was 7% below league average — 22nd of 30 in MLB. Ty France led the position players at 3.4 WAR, and Chris Flexen the rotation at a 3.61 ERA.
The 2021 season
Month by month, the streaks, and the record in the games that are argued about.
They finished 2nd in the AL West, 5 games back. They spent 7 of 186 days in first place, led by as many as 1.5 games on April 19 and were as far as 9 games back on June 16. Their best month was Sept/Oct at 19-10, their worst May at 13-15. The longest runs were a 6-game winning streak from September 19 to September 24 and a 6-game losing streak from May 17 to May 23. They were 46-35 at home and 44-37 on the road, 33-19 in one-run games and 44-34 against clubs that finished .500 or better. The most lopsided win was 10-0 against the Twins on June 15; the heaviest defeat, 16-1 at the Padres on May 21.
Record by month. March games count toward April, October’s toward September.
Month
W
L
Pct
RS
RA
Diff
March/April
15
12
.556
112
111
+1
May
13
15
.464
96
139
-43
June
14
12
.538
125
130
-5
July
14
10
.583
112
120
-8
August
15
13
.536
112
114
-2
Sept/Oct
19
10
.655
140
134
+6
Splits. Extra innings are blank for a season whose games predate the innings count.
Games
W-L
Pct
Home
46-35
.568
Road
44-37
.543
One-run games
33-19
.635
Extra innings
14-7
.667
Within the division
47-29
.618
Against .500+ clubs
44-34
.564
Decided by 5+ runs
11-28
.282
Last 10
7-3
.700
American League West standings, 2021
Final standings. The division page has the rest of its season.
American League West, 2021. Games back of the best record in the division.
The players whose season belongs to this club, by position and then by dbWAR. A player traded mid-season is listed with the club he played most of his games for, so a deadline arrival may appear on his other club’s page instead.
Each rectangle is a player, sized by his share of the team's hits; darker means a larger share. Top 30 contributors. Select a different statistic above, or click a player for his page.
Day and night divide the home schedule, and so do weekend and weekday. The road line is a different question.
Split
Games
Avg
Med
Low
High
All home
81
15,012
12,635
5,776
44,414
Night
58
14,638
11,400
5,776
44,414
Day
23
15,954
14,031
6,742
44,229
Weekend
38
18,550
15,315
8,392
44,414
Weekday
43
11,885
10,519
5,776
19,887
On the road
79
16,870
15,250
2,865
43,180
Through the season
Average home crowd by month.
Month
Games
Average
Apr
12
8,381
May
17
9,003
Jun
11
11,128
Jul
16
20,462
Aug
12
19,056
Sep
10
15,107
Oct
3
44,271
By season
Announced gate — tickets distributed, which is the figure every reference publishes and is not the same as people through the turnstile. A game the feed reports no gate for is left out rather than counted as empty. Seasons before attendance was carried into the lake are absent from the trend rather than shown as zero.
Game time
First pitch to final out across 162 completed games, 2021.
Regulation
3:08
141 games
All games
3:12
Extra innings
3:40
21 of them
Longest
4:40
2021-08-27, 12 inn
Shortest
2:08
2021-08-12
By situation
Regulation and extra innings divide the season, and so do home and road. Day and night overlap both.
Split
Games
Avg
Med
Fastest
Longest
All
162
3:12
3:11
2:01
4:40
Regulation
141
3:08
3:09
2:01
4:14
Extra innings
21
3:40
3:41
2:26
4:40
Home
81
3:12
3:11
2:08
4:40
Road
81
3:13
3:11
2:01
4:16
Day
56
3:11
3:10
2:01
4:14
Night
106
3:13
3:11
2:26
4:40
Through the season
Average completed game by month.
Month
Games
Average
Apr
12
3:15
May
17
2:58
Jun
11
2:59
Jul
16
3:21
Aug
12
3:17
Sep
10
3:16
Oct
3
3:35
By season
Regulation games only, in minutes. 188 minutes this season.
Elapsed time from first pitch to final out. The feed does not itemise delays, so a rain delay is inside these numbers with no way to subtract it. Games called early are excluded — five innings in ninety-three minutes is not a short game — but they still count in attendance, because the crowd turned up.
Record versus run differential
Seattle Mariners are 90-72, a .556 win rate, while their -51 run differential implies .468. That is about 14 wins ahead of it, usually a mix of bullpen sequencing and one-run luck.
