# 2021 Seattle Mariners season

The 2021 Seattle Mariners season was the 45th season in franchise history. The Mariners played their 22nd full season (23rd overall) at T-Mobile Park, their home ballpark in Seattle, Washington. The M's entered this season with the longest active playoff drought in the four major North American professional sports leagues, attempting to make their first postseason in twenty years. Seattle is the only current Major League Baseball (MLB) franchise without a World Series appearance. Despite posting a 90–72 record, their best since the 2003 season, the Mariners were eliminated from postseason contention for the 20th consecutive season after Boston swept the Washington Nationals to clinch the wild card berth and the Yankees clinched the remaining wild card spot on the last day of the season. This season was the second time during their drought that they’d won two more regular season games than the World Series champions.

## Regular season

In the Mariners' 1–0 loss to the Los Angeles Dodgers on April 20, the two teams combined for three hits, tying the record for the fewest in an interleague game set by the Boston Red Sox and Montreal Expos in 1997. As that game featured a home run, a double, and a single, and the Mariners/Dodgers games featured just a double and two singles, it broke the record for fewest total bases in a regular-season interleague game.

### American League West

vteAL West :
| Team | W | L | Pct. | GB | Home | Road |
| Houston Astros | 95 | 67 | .586 | — | 51‍–‍30 | 44‍–‍37 |
| Seattle Mariners | 90 | 72 | .556 | 5 | 46‍–‍35 | 44‍–‍37 |
| Oakland Athletics | 86 | 76 | .531 | 9 | 43‍–‍38 | 43‍–‍38 |
| Los Angeles Angels | 77 | 85 | .475 | 18 | 40‍–‍42 | 37‍–‍43 |
| Texas Rangers | 60 | 102 | .370 | 35 | 36‍–‍45 | 24‍–‍57 |

### American League playoff standings

vteDivision Leaders :
| Team | W | L | Pct. |
| Tampa Bay Rays | 100 | 62 | .617 |
| Houston Astros | 95 | 67 | .586 |
| Chicago White Sox | 93 | 69 | .574 |
vteWild Card teams (Top 2 teams qualify for postseason) :
| Team | W | L | Pct. | GB |
| Boston Red Sox | 92 | 70 | .568 | — |
| New York Yankees | 92 | 70 | .568 | — |
| Toronto Blue Jays | 91 | 71 | .562 | 1 |
| Seattle Mariners | 90 | 72 | .556 | 2 |
| Oakland Athletics | 86 | 76 | .531 | 6 |
| Cleveland Indians | 80 | 82 | .494 | 12 |
| Los Angeles Angels | 77 | 85 | .475 | 15 |
| Detroit Tigers | 77 | 85 | .475 | 15 |
| Kansas City Royals | 74 | 88 | .457 | 18 |
| Minnesota Twins | 73 | 89 | .451 | 19 |
| Texas Rangers | 60 | 102 | .370 | 32 |
| Baltimore Orioles | 52 | 110 | .321 | 40 |

### Record against opponents

2021 American League recordvte
Source: MLB Standings Grid – 2021 :
| Team | BAL | BOS | CWS | CLE | DET | HOU | KC | LAA | MIN | NYY | OAK | SEA | TB | TEX | TOR | NL |
| Baltimore | — | 6–13 | 0–7 | 2–5 | 2–5 | 3–3 | 4–3 | 2–4 | 2–4 | 8–11 | 3–3 | 3–4 | 1–18 | 4–3 | 5–14 | 7–13 |
| Boston | 13–6 | — | 3–4 | 4–2 | 3–3 | 2–5 | 5–2 | 3–3 | 5–2 | 10–9 | 3–3 | 4–3 | 8–11 | 3–4 | 10–9 | 16–4 |
| Chicago | 7–0 | 4–3 | — | 10–9 | 12–7 | 2–5 | 9–10 | 2–5 | 13–6 | 1–5 | 4–3 | 3–3 | 3–3 | 5–1 | 4–3 | 14–6 |
| Cleveland | 5–2 | 2–4 | 9–10 | — | 12–7 | 1–6 | 14–5 | 5–1 | 8–11 | 3–4 | 2–4 | 3–4 | 1–6 | 4–2 | 2–5 | 9–11 |
| Detroit | 5–2 | 3–3 | 7–12 | 7–12 | — | 5–2 | 8–11 | 1–6 | 8–11 | 3–3 | 1–6 | 5–1 | 4–3 | 6–1 | 3–3 | 11–9 |
| Houston | 3–3 | 5–2 | 5–2 | 6–1 | 2–5 | — | 3–4 | 13–6 | 3–4 | 2–4 | 11–8 | 11–8 | 4–2 | 14–5 | 4–2 | 9–11 |
| Kansas City | 3–4 | 2–5 | 10–9 | 5–14 | 11–8 | 4–3 | — | 2–4 | 10–9 | 2–4 | 2–5 | 4–3 | 2–4 | 2–4 | 3–4 | 12–8 |
| Los Angeles | 4–2 | 3–3 | 5–2 | 1–5 | 6–1 | 6–13 | 4–2 | — | 5–2 | 4–3 | 4–15 | 8–11 | 1–6 | 11–8 | 4–3 | 11–9 |
| Minnesota | 4–2 | 2–5 | 6–13 | 11–8 | 11–8 | 4–3 | 9–10 | 2–5 | — | 1–6 | 1–5 | 2–4 | 3–3 | 4–3 | 3–4 | 10–10 |
| New York | 11–8 | 9–10 | 5–1 | 4–3 | 3–3 | 4–2 | 4–2 | 3–4 | 6–1 | — | 4–3 | 5–2 | 8–11 | 6–1 | 8–11 | 12–8 |
| Oakland | 3–3 | 3–3 | 3–4 | 4–2 | 6–1 | 8–11 | 5–2 | 15–4 | 5–1 | 3–4 | — | 4–15 | 4–3 | 10–9 | 2–5 | 11–9 |
| Seattle | 4–3 | 3–4 | 3–3 | 4–3 | 1–5 | 8–11 | 3–4 | 11–8 | 4–2 | 2–5 | 15–4 | — | 6–1 | 13–6 | 4–2 | 9–11 |
| Tampa Bay | 18–1 | 11–8 | 3–3 | 6–1 | 3–4 | 2–4 | 4–2 | 6–1 | 3–3 | 11–8 | 3–4 | 1–6 | — | 3–4 | 11–8 | 15–5 |
| Texas | 3–4 | 4–3 | 1–5 | 2–4 | 1–6 | 5–14 | 4–2 | 8–11 | 3–4 | 1–6 | 9–10 | 6–13 | 4–3 | — | 2–4 | 7–13 |
| Toronto | 14–5 | 9–10 | 3–4 | 5–2 | 3–3 | 2–4 | 4–3 | 3–4 | 4–3 | 11–8 | 5–2 | 2–4 | 8–11 | 4–2 | — | 14–6 |
Updated with the results of all games through October 3, 2021.

### Game log

2021 game log: 90–72 (Home: 46–35; Away: 44–37) :
April: 15–12 (Home: 7–5; Away: 8–7)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
1April 1Giants8–7 (10)Misiewicz (1–0)Álvarez (0–1)—8,1741–0W1
2April 2Giants3–6Peralta (1–0)Steckenrider (0–1)McGee (1)8,3921–1L1
3April 3Giants4–0Flexen (1–0)Webb (0–1)Montero (1)8,6512–1W1
4April 5White Sox0–6Rodón (1–0)Sheffield (0–1)—6,4362–2L1
5April 6White Sox4–10Giolito (1–0)Margevicius (0–1)—7,9802–3L2
6April 7White Sox8–4Vest (1–0)Foster (0–1)—7,4293–3W1
7April 8@ Twins2–10Berríos (2–0)Gonzales (0–1)—9,6753–4L2
8April 10@ Twins4–3 (10)Graveman (1–0)Rogers (0–1)Middleton (1)9,8174–4W1
9April 11@ Twins8–6Steckenrider (1–1)Colomé (0–1)Montero (2)9,7925–4W2
–April 12@ OriolesPostponed (Rain, makeup: April 13)
10April 13 (1)@ Orioles4–3 (8)Montero (1–0)Scott (0–1)Graveman (1)N/A6–4W3
11April 13 (2)@ Orioles6–7 (7)Valdez (2–0)Sadler (0–1)—4,1476–5L1
–April 14@ OriolesPostponed (Rain, makeup: April 15)
12April 15 (1)@ Orioles4–2 (7)Gonzales (1–1)Scott (0–2)Graveman (2)N/A7–5W1
13April 15 (2)@ Orioles2–1 (7)Dunn (1–0)Zimmermann (1–1)Middleton (2)5,0608–5W2
14April 16Astros6–5Misiewicz (2–0)Stanek (0–1)—8,9679–5W3
15April 17Astros0–1Greinke (2–1)Flexen (1–1)Pressly (1)8,9609–6L1
16April 18Astros7–2Newsome (1–0)Odorizzi (0–2)—8,95910–6W1
17April 19Dodgers4–3Sheffield (1–1)May (1–1)Montero (3)8,99911–6W2
18April 20Dodgers0–1Urías (3–0)Gonzales (1–2)Jansen (4)8,99811–7L1
19April 22@ Red Sox7–3 (10)Montero (2–0)Hernández (0–1)—4,61712–7W1
20April 23@ Red Sox5–6Sawamura (1–0)Kikuchi (0–1)—4,64612–8L1
21April 24@ Red Sox8–2Flexen (2–1)Eovaldi (3–2)—4,62113–8W1
22April 25@ Red Sox3–5Rodríguez (4–0)Margevicius (0–2)Barnes (4)4,51013–9L1
23April 26@ Astros2–5Urquidy (1–2)Sheffield (1–2)Pressly (2)11,86213–10L2
24April 27@ Astros0–2Javier (3–0)Gonzales (1–3)Pressly (3)14,41313–11L3
25April 28@ Astros5–7Smith (1–1)Montero (2–1)Stanek (1)12,70713–12L4
26April 29@ Astros1–0Kikuchi (1–1)García (0–3)Graveman (3)14,14914–12W1
27April 30Angels7–4Steckenrider (2–1)Heaney (1–2)—8,63215–12W2 :
May: 13–15 (Home: 10–7; Away: 3–8)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
28May 1Angels5–10Canning (2–2)Newsome (1–1)—8,99315–13L1
29May 2Angels2–0Sheffield (2–2)Bundy (0–3)Montero (4)9,00016–13W1
30May 3Orioles3–5Sulser (1–0)Misiewicz (2–1)Valdez (7)5,77616–14L1
31May 4Orioles5–2Montero (3–1)Lakins (1–3)—6,50417–14W1
32May 5Orioles0–6Means (4–0)Kikuchi (1–2)—6,74217–15L1
33May 7@ Rangers5–4Flexen (3–1)Sborz (3–2)Graveman (4)26,04718–15W1
34May 8@ Rangers8–9King (4–1)Misiewicz (2–2)Kennedy (10)26,61618–16L1
35May 9@ Rangers2–10Dunning (2–2)Sheffield (2–3)—30,63218–17L2
36May 11@ Dodgers4–6Cleavinger (1–3)Montero (3–2)Jansen (6)15,57018–18L3
37May 12@ Dodgers1–7Urías (5–1)Dunn (1–1)—15,58618–19L4
38May 13Indians2–4Plesac (3–3)Gilbert (0–1)Shaw (1)9,88018–20L5
39May 14Indians7–3Flexen (4–1)Civale (5–1)Montero (5)10,01419–20W1
40May 15Indians7–3Sheffield (3–3)McKenzie (1–2)—10,31120–20W2
41May 16Indians3–2Sewald (1–0)Bieber (4–3)Graveman (5)10,28721–20W3
42May 17Tigers1–4Mize (3–3)Kikuchi (1–3)Fulmer (3)7,20121–21L1
43May 18Tigers0–5Turnbull (3–2)Dunn (1–2)—6,88321–22L2
44May 19Tigers2–6Skubal (1–6)Gilbert (0–2)—8.46221–23L3
45May 21@ Padres1–16Paddack (2–3)Flexen (4–2)—15,25021–24L4
46May 22@ Padres4–6Stammen (3–1)Sheffield (3–4)Melancon (16)15,25021–25L5
47May 23@ Padres2–9Darvish (5–1)Misiewicz (2–3)—15,25021–26L6
48May 24@ Athletics4–2Kikuchi (2–3)Montas (5–4)Middleton (3)3,01922–26W1
49May 25@ Athletics4–3Sewald (2–0)Irvin (3–6)Montero (6)2,86523–26W2
50May 26@ Athletics3–6Kaprielian (2–0)Dugger (0–1)Diekman (6)3,57123–27L1
51May 27Rangers5–0Flexen (5–2)Allard (1–1)—9,00824–27W1
52May 28Rangers3–2Sheffield (4–4)Lyles (2–4)Swanson (1)10,60525–27W2
53May 29Rangers3–2Zamora (1–0)Foltynewicz (1–5)Montero (7)11,07126–27W3
54May 30Rangers4–2Kikuchi (3–3)Yang (0–3)Middleton (4)11,19827–27W4
55May 31Athletics6–5 (10)Zamora (2–0)Trivino (2–2)—11,11228–27W5 :
June: 14–12 (Home: 7–4; Away: 7–8)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
56June 1Athletics6–12Luzardo (2–3)Sewald (2–1)—9,16028–28L1
57June 2Athletics0–6Manaea (4–2)Flexen (5–3)—9,58828–29L2
58June 3@ Angels6–2Sheffield (5–4)Canning (4–4)—9,71429–29W1
59June 4@ Angels2–3Ohtani (2–1)Santiago (0–1)Iglesias (10)15,14129–30L1
60June 5@ Angels5–12Cobb (4–2)Steckenrider (2–2)—15,07129–31L2
61June 6@ Angels9–5Gilbert (1–2)Sandoval (0–2)—12,83330–31W1
62June 8@ Tigers3–5Boyd (3–6)Gonzales (1–4)Cisnero (2)9,08130–32L1
63June 9@ Tigers9–6 (11)Chargois (1–0)Norris (0–2)—9,16231–32W1
64June 10@ Tigers3–8Jiménez (1–0)Sheffield (5–5)—9,29031–33L1
65June 11@ Indians0–7Civale (9–2)Dunn (1–3)—22,97031–34L2
66June 12@ Indians4–5 (10)Karinchak (3–2)Sewald (2–2)—20,11631–35L3
67June 13@ Indians6–2Gilbert (2–2)Bieber (7–4)—17,37132–35W1
68June 14Twins4–3Sewald (3–2)Robles (2–3)Steckenrider (1)9,18533–35W2
69June 15Twins10–0Flexen (6–3)Happ (3–3)—7,66934–35W3
70June 16Twins2–7Thielbar (1–0)Sheffield (5–6)—8,09834–36L1
71June 17Rays6–5Santiago (1–1)Fairbanks (1–2)—9,09235–36W1
72June 18Rays5–1Kikuchi (4–3)Wacha (1–2)—12,65436–36W2
73June 19Rays6–5 (10)Montero (4–2)Feyereisen (3–3)—14,77237–36W3
74June 20Rays6–2 (10)Montero (5–2)Castillo (2–4)—18,17238–36W4
75June 22Rockies2–1Sewald (4–2)Kinley (1–2)Graveman (6)12,87939–36W5
76June 23Rockies2–5Márquez (6–6)Sheffield (5–7)Bard (10)11,14139–37L1
77June 25@ White Sox9–3Kikuchi (5–3)Rodón (6–3)—32,18940–37W1
—June 26@ White SoxSuspended (Rain, continuation: June 27)
78June 27 (1)@ White Sox3–2Sewald (5–2)Hendriks (3–2)Graveman (7)30,01741–37W2
79June 27 (2)@ White Sox5–7 (7)Bummer (1–4)Dugger (0–2)Hendriks (20)30,01741–38L1
80June 29@ Blue Jays3–9Ray (6–3)Montero (5–3)—6,73641–39L2
81June 30@ Blue Jays9–7 (10)Graveman (2–0)Murphy (0–1)Steckenrider (2)6,63242–39W1 :
July: 14–10 (Home: 9–7; Away: 5–3)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
82July 1@ Blue Jays7–2Kikuchi (6–3)Ryu (7–5)Sewald (1)5,45643–39W2
83July 2Rangers5–4 (10)Misiewicz (3–3)Hearn (2–3)—28,63844–39W3
84July 3Rangers3–7Lyles (4–5)Gonzales (1–5)—16,04644–40L1
85July 4Rangers4–1Flexen (7–3)Foltynewicz (2–8)Graveman (8)15,14645–40W1
86July 6Yankees1–12Taillon (4–4)Sheffield (5–8)—16,54745–41L1
87July 7Yankees4–5Cessa (2–1)Kikuchi (6–4)Green (3)17,20545–42L2
88July 8Yankees4–0Gilbert (3–2)Montgomery (3–4)—17,52446–42W1
89July 9Angels7–3Steckenrider (3–2)Mayers (2–4)—20,38147–42W2
90July 10Angels2–0Flexen (8–3)Sandoval (2–3)Sewald (2)27,35348–42W3
91July 11Angels1–7Suárez (4–2)Ramírez (0–1)Iglesias (19)23,34848–43L1
–July 1391st All-Star Game in Denver, CO
92July 16@ Angels6–5Flexen (9–3)Heaney (5–7)Sewald (3)40,88049–43W1
93July 17@ Angels4–9Cobb (7–3)Kikuchi (6–5)—28,92749–44L1
94July 18@ Angels7–4Gilbert (4–2)Sandoval (2–4)—23,43450–44W1
95July 20@ Rockies6–4Gonzales (2–5)Márquez (8–7)Graveman (9)30,71551–44W2
96July 21@ Rockies3–6Gomber (7–5)Middleton (0–1)Bard (15)25,05351–45L1
97July 22Athletics1–4Manaea (7–6)Flexen (9–4)Trivino (16)18,55351–46L2
98July 23Athletics4–3Sewald (6–2)Diekman (2–2)Graveman (10)21,31252–46W1
99July 24Athletics5–4Graveman (3–0)Trivino (3–4)—30,84353–46W2
100July 25Athletics4–3Gonzales (3–5)Irvin (7–9)Steckenrider (3)21,50154–46W3
101July 26Astros11–8Graveman (4–0)Stanek (1–2)Sewald (4)15,16255–46W4
102July 27Astros6–8McCullers Jr. (8–2)Flexen (9–5)—18,93055–47L1
103July 28Astros4–11Odorizzi (4–5)Kikuchi (6–6)—18,90855–48L2
104July 30@ Rangers9–5Gilbert (5–2)Allard (2–9)—27,54256–48W1
105July 31@ Rangers4–5 (10)Patton (1–1)Castillo (2–5)—33,46356–49L1 :
August: 15–13 (Home: 6–6; Away: 9–7)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
106August 1@ Rangers3–4Santana (1–1)Swanson (0–1)—23,66456–50L2
107August 2@ Rays8–2Flexen (10–5)Wacha (2–3)—5,85557–50W1
108August 3@ Rays4–2Kikuchi (7–6)Patiño (2–3)Castillo (15)10,07158–50W2
109August 4@ Rays3–4Fleming (9–5)Gilbert (5–3)Sherriff (1)9,70158–51L1
110August 5@ Yankees3–5Green (5–5)Sewald (6–3)Chapman (23)33,21158–52L2
111August 6@ Yankees2–3 (11)Abreu (1–0)Middleton (0–2)—43,18058–53L3
112August 7@ Yankees4–5Heaney (7–8)Misiewicz (3–4)Loáisiga (4)35,16558–54L4
113August 8@ Yankees2–0Sewald (7–3)Luetge (4–2)Steckenrider (4)35,43759–54W1
114August 10Rangers4–5 (10)Martin (3–3)Swanson (0–2)—15,41259–55L1
115August 11Rangers2–1Steckenrider (4–2)Santana (1–2)—15,78960–55W1
116August 12Rangers3–1Gonzales (4–5)Foltynewicz (2–11)—14,03161–55W2
117August 13Blue Jays3–2Steckenrider (5–2)Cimber (2–4)—28,20762–55W3
118August 14Blue Jays9–3Middleton (1–2)Ryu (11–6)—26,09063–55W4
119August 15Blue Jays3–8Matz (10–7)Gilbert (5–4)—22,67963–56L1
120August 17@ Rangers3–1Anderson (6–8)Hearn (2–4)Sewald (5)15,14064–56W1
121August 18@ Rangers3–1Gonzales (5–5)Foltynewicz (2–12)Steckenrider (5)19,11965–56W2
122August 19@ Rangers9–8 (11)Smith (2–1)Barlow (0–1)Sewald (6)16,39166–56W3
123August 20@ Astros3–12McCullers Jr. (10–4)Kikuchi (7–7)—26,89966–57L1
124August 21@ Astros1–15Odorizzi (6–6)Gilbert (5–5)—29,90866–58L2
125August 22@ Astros6–3 (11)Sewald (8–3)Stanek (1–3)Ramírez (1)27,52667–58W1
126August 23@ Athletics5–3Misiewicz (4–4)Trivino (5–6)Sewald (7)4,14068–58W2
127August 24@ Athletics5–1Flexen (11–5)Irvin (9–12)Steckenrider (6)4,50869–58W3
128August 26Royals4–6Santana (1–1)Smith (2–2)Barlow (9)16,88269–59L1
129August 27Royals7–8 (12)Staumont (3–2)Ramírez (0–2)—22,95369–60L2
130August 28Royals2–4Payamps (1–3)Anderson (6–9)Barlow (10)24,57569–61L3
131August 29Royals4–3Gonzales (6–5)Zuber (0–3)Steckenrider (7)20,04470–61W1
132August 30Astros3–4Maton (4–0)Smith (2–3)Pressly (22)11,63070–62L1
133August 31Astros4–0Sewald (9–3)Graveman (5–1)—10,45271–62W1 :
September: 18–8 (Home: 6–4; Away: 12–4)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
134September 1Astros1–0Sheffield (6–8)Odorizzi (6–7)Sewald (8)10,51972–62W2
135September 3@ Diamondbacks6–5 (10)Sheffield (7–8)Clarke (1–2)Ramírez (2)12,72973–62W3
136September 4@ Diamondbacks8–5Gonzales (7–5)Smith (4–9)Castillo (16)18,81974–62W4
137September 5@ Diamondbacks10–4 (11)Ramírez (1–2)Clarke (1–3)—14,40875–62W5
138September 6@ Astros2–11McCullers Jr. (11–4)Kikuchi (7–8)Bielak (1)25,80275–63L1
139September 7@ Astros4–5 (10)Stanek (2–4)Ramírez (1–3)—20,35375–64L2
140September 8@ Astros8–5Castillo (3–5)Pressly (5–2)—19,08976–64W1
141September 10Diamondbacks5–4Gonzales (8–5)Bumgarner (7–10)Steckenrider (8)14,37977–64W2
142September 11Diamondbacks3–7Castellanos (2–1)Flexen (11–6)—15,48377–65L1
143September 12Diamondbacks4–5Gilbert (2–2)Misiewicz (4–5)Wendelken (1)13,55177–66L2
144September 13Red Sox5–4Castillo (4–5)Brasier (0–1)Steckenrider (9)18,21978–66W1
145September 14Red Sox4–8Ottavino (6–3)Smith (2–4)—19,88778–67L1
146September 15Red Sox4–9 (10)Ottavino (7–3)Swanson (0–3)—17,86078–68L2
147September 17@ Royals6–2Flexen (12–6)Heasley (0–1)—14,90479–68W1
148September 18@ Royals1–8Bubic (5–6)Kikuchi (7–9)—20,08579–69L1
149September 19@ Royals7–1Gilbert (6–5)Kowar (0–4)—16,87280–69W1
150September 20@ Athletics4–2Anderson (7–9)Manaea (10–10)Sewald (9)4,06881–69W2
151September 21@ Athletics5–2Gonzales (9–5)Blackburn (1–3)Steckenrider (10)4,24682–69W3
152September 22@ Athletics4–1Flexen (13–6)Irvin (10–14)Steckenrider (11)4,14983–69W4
153September 23@ Athletics6–5Smith (3–4)Diekman (3–3)Sewald (10)4,96684–69W5
154September 24@ Angels6–5Smith (4–4)Herget (2–2)Sewald (11)18,55185–69W6
155September 25@ Angels1–14Díaz (1–0)Anderson (7–10)—30,22185–70L1
156September 26@ Angels5–1Gonzales (10–5)Quijada (0–2)—22,05786–70W1
157September 27Athletics13–4Flexen (14–6)Irvin (10–15)—11,16987–70W2
158September 28Athletics4–2Misiewicz (5–5)Petit (8–3)Steckenrider (12)12,63588–70W3
159September 29Athletics4–2Castillo (5–5)Chafin (2–4)Steckenrider (13)17,36689–70W4 :
October: 1–2 (Home: 1–2; Away: 0–0)
#DateOpponentScoreWinLossSaveAttendanceRecordStreak
160October 1Angels1–2Suárez (8–8)Gonzales (10–6)Iglesias (34)44,16989–71L1
161October 2Angels6–4Sewald (10–3)Cishek (0–2)Steckenrider (14)44,41490–71W1
162October 3Angels3–7Ortega (1–1)Anderson (7–11)—44,22990–72L1 :
Legend:        = Win        = Loss        = Postponement Bold = Mariners team member :

## Statistics
### Batting

Stats in bold are the team leaders.
Note: G = Games played; AB = At bats; R = Runs; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; SB = Stolen bases; BB = Walks; AVG = Batting average; TB = Total bases
| Player | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | AVG | TB |
| Mitch Haniger | 157 | 620 | 110 | 157 | 23 | 2 | 39 | 100 | 1 | 54 | .253 | 301 |
| JP Crawford | 160 | 619 | 89 | 169 | 37 | 0 | 9 | 54 | 3 | 58 | .273 | 233 |
| Kyle Seager | 159 | 603 | 73 | 128 | 29 | 1 | 35 | 101 | 3 | 59 | .212 | 264 |
| Ty France | 152 | 571 | 85 | 166 | 32 | 1 | 18 | 73 | 0 | 46 | .291 | 254 |
| Luis Torrens | 108 | 346 | 39 | 84 | 16 | 2 | 18 | 47 | 0 | 28 | .243 | 149 |
| Jarred Kelenic | 93 | 337 | 41 | 61 | 13 | 1 | 14 | 43 | 6 | 36 | .181 | 118 |
| Dylan Moore | 126 | 332 | 42 | 60 | 11 | 2 | 12 | 43 | 21 | 40 | .181 | 111 |
| Tom Murphy | 97 | 277 | 35 | 56 | 8 | 0 | 11 | 34 | 0 | 40 | .202 | 97 |
| Abraham Toro | 60 | 226 | 28 | 57 | 11 | 0 | 5 | 26 | 3 | 22 | .252 | 83 |
| Jake Fraley | 78 | 214 | 27 | 45 | 7 | 0 | 9 | 36 | 10 | 46 | .210 | 79 |
| Jake Bauers | 72 | 182 | 20 | 40 | 4 | 0 | 2 | 13 | 6 | 18 | .220 | 50 |
| Taylor Trammell | 51 | 156 | 23 | 25 | 7 | 0 | 8 | 18 | 2 | 17 | .160 | 56 |
| Cal Raleigh | 47 | 139 | 6 | 25 | 12 | 0 | 2 | 13 | 0 | 7 | .180 | 43 |
| Kyle Lewis | 36 | 130 | 15 | 32 | 4 | 0 | 5 | 11 | 2 | 16 | .246 | 51 |
| Shed Long Jr. | 34 | 111 | 13 | 22 | 4 | 1 | 4 | 17 | 1 | 9 | .198 | 40 |
| José Marmolejos | 41 | 106 | 11 | 17 | 4 | 0 | 4 | 12 | 0 | 15 | .160 | 33 |
| Evan White | 30 | 97 | 8 | 14 | 3 | 0 | 2 | 9 | 0 | 6 | .144 | 23 |
| Sean Haggerty | 35 | 86 | 15 | 16 | 3 | 0 | 2 | 5 | 5 | 6 | .186 | 25 |
| Donovan Walton | 24 | 63 | 6 | 13 | 2 | 1 | 2 | 7 | 1 | 4 | .206 | 23 |
| José Godoy | 16 | 37 | 2 | 6 | 1 | 0 | 0 | 3 | 0 | 3 | .162 | 7 |
| Jack Mayfield | 11 | 34 | 2 | 6 | 1 | 0 | 0 | 3 | 0 | 1 | .176 | 7 |
| Jacob Nottingham | 10 | 26 | 3 | 3 | 0 | 0 | 1 | 2 | 0 | 2 | .115 | 6 |
| Eric Campbell | 4 | 11 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | .273 | 3 |
| Dillon Thomas | 4 | 9 | 2 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | .111 | 1 |
| Braden Bishop | 8 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | .250 | 1 |
| Marco Gonzalez | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0 |
| Chris Flexen | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0 |
| Justin Dunn | 2 | 3 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | .333 | 2 |
| Tyler Anderson | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | 0 |
| Yusei Kikuchi | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0 |
| Darren McCaughan | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0 |
| Justus Sheffield | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | .500 | 1 |
| Kevin Padlo | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | 0 |
| Team Totals | 162 | 5355 | 697 | 1209 | 233 | 11 | 199 | 673 | 64 | 535 | .226 | 2061 |

### Pitching

Stats in bold are the team leaders.
Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts
| Player | W | L | ERA | G | GS | SV | IP | H | R | ER | BB | K |
| Chris Flexen | 14 | 6 | 3.61 | 31 | 31 | 0 | 179.2 | 185 | 74 | 72 | 40 | 125 |
| Yusei Kikuchi | 7 | 9 | 4.41 | 29 | 29 | 0 | 157.0 | 145 | 82 | 77 | 62 | 163 |
| Marco Gonzales | 10 | 6 | 3.96 | 25 | 25 | 0 | 143.1 | 125 | 64 | 63 | 42 | 108 |
| Logan Gilbert | 6 | 5 | 4.68 | 24 | 24 | 0 | 119.1 | 112 | 63 | 62 | 28 | 128 |
| Justus Sheffield | 7 | 8 | 6.83 | 21 | 15 | 0 | 80.1 | 105 | 69 | 61 | 43 | 63 |
| Drew Steckenrider | 5 | 2 | 2.00 | 62 | 0 | 14 | 67.2 | 52 | 16 | 15 | 17 | 58 |
| Paul Sewald | 10 | 3 | 3.06 | 62 | 0 | 11 | 64.2 | 42 | 24 | 22 | 24 | 104 |
| Tyler Anderson | 2 | 3 | 4.81 | 13 | 13 | 0 | 63.2 | 71 | 35 | 34 | 13 | 48 |
| Anthony Misiewicz | 5 | 5 | 4.61 | 66 | 0 | 0 | 54.2 | 61 | 30 | 28 | 15 | 53 |
| Justin Dunn | 1 | 3 | 3.75 | 11 | 11 | 0 | 50.1 | 37 | 21 | 21 | 29 | 49 |
| Rafael Montero | 5 | 3 | 7.27 | 40 | 0 | 7 | 43.1 | 56 | 39 | 35 | 15 | 37 |
| Casey Sadler | 0 | 1 | 0.67 | 42 | 0 | 0 | 40.1 | 19 | 4 | 3 | 10 | 37 |
| Erik Swanson | 0 | 3 | 3.31 | 33 | 2 | 1 | 35.1 | 28 | 18 | 13 | 10 | 35 |
| Will Vest | 1 | 0 | 6.17 | 32 | 0 | 0 | 35.0 | 38 | 25 | 24 | 18 | 27 |
| Kendall Graveman | 4 | 0 | 0.82 | 30 | 0 | 10 | 33.0 | 15 | 7 | 3 | 8 | 34 |
| Keynan Middleton | 1 | 2 | 4.94 | 32 | 1 | 4 | 31.0 | 30 | 20 | 17 | 19 | 24 |
| JT Chargois | 1 | 0 | 3.00 | 31 | 0 | 0 | 30.0 | 23 | 11 | 10 | 6 | 29 |
| Yohan Ramírez | 1 | 3 | 3.90 | 25 | 0 | 2 | 27.2 | 18 | 14 | 12 | 12 | 35 |
| Hector Santiago | 1 | 1 | 3.42 | 13 | 1 | 0 | 26.1 | 27 | 10 | 10 | 11 | 30 |
| Robert Dugger | 0 | 2 | 7.36 | 12 | 4 | 0 | 25.2 | 34 | 24 | 21 | 12 | 19 |
| Diego Castillo | 3 | 1 | 2.86 | 24 | 0 | 2 | 22.0 | 14 | 9 | 7 | 7 | 26 |
| Joe Smith | 3 | 3 | 2.00 | 23 | 0 | 0 | 18.0 | 12 | 5 | 4 | 4 | 17 |
| Ljay Newsome | 1 | 1 | 7.98 | 7 | 1 | 0 | 14.2 | 20 | 14 | 13 | 3 | 16 |
| Wyatt Mills | 0 | 0 | 9.95 | 11 | 0 | 0 | 12.2 | 19 | 14 | 14 | 7 | 11 |
| Nick Margevicius | 0 | 2 | 8.25 | 5 | 3 | 0 | 12.0 | 13 | 16 | 11 | 7 | 12 |
| Sean Doolittle | 0 | 0 | 4.76 | 11 | 0 | 0 | 11.1 | 10 | 6 | 6 | 5 | 12 |
| Matt Andriese | 0 | 0 | 2.45 | 8 | 0 | 0 | 11.0 | 10 | 6 | 3 | 2 | 12 |
| Darren McCaughan | 0 | 0 | 8.00 | 2 | 1 | 0 | 9.0 | 8 | 8 | 8 | 4 | 2 |
| Daniel Zamora | 2 | 0 | 6.23 | 4 | 0 | 0 | 4.1 | 5 | 4 | 3 | 1 | 3 |
| Aaron Fletcher | 0 | 0 | 12.27 | 4 | 0 | 0 | 3.2 | 7 | 5 | 5 | 1 | 2 |
| Ryan Weber | 0 | 0 | 6.00 | 2 | 0 | 0 | 3.0 | 1 | 2 | 2 | 2 | 1 |
| Yacksel Ríos | 0 | 0 | 9.00 | 3 | 0 | 0 | 3.0 | 5 | 3 | 3 | 2 | 2 |
| Domingo Tapia | 0 | 0 | 0.00 | 2 | 0 | 0 | 2.0 | 4 | 0 | 0 | 1 | 1 |
| Brady Lail | 0 | 0 | 13.50 | 2 | 0 | 0 | 2.0 | 4 | 3 | 3 | 0 | 1 |
| James Paxton | 0 | 0 | 6.75 | 1 | 1 | 0 | 1.1 | 0 | 1 | 1 | 1 | 2 |
| Vinny Nittoli | 0 | 0 | 18.00 | 1 | 0 | 0 | 1.0 | 1 | 2 | 2 | 2 | 1 |
| Andrés Muñoz | 0 | 0 | 0.00 | 1 | 0 | 0 | 0.2 | 0 | 0 | 0 | 2 | 1 |
| Jack Mayfield | 0 | 0 | 0.00 | 1 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 |
| Team Totals | 90 | 72 | 4.30 | 162 | 162 | 51 | 1440.1 | 1356 | 748 | 688 | 485 | 1328 |

## Farm system

| Level | Team | League | Manager |
| AAA | Tacoma Rainiers | Triple-A West | Kristopher Negrón |
| AA | Arkansas Travelers | Double-A Central | Collin Cowgill |
| High-A | Everett AquaSox | High-A West | Louis Boyd |
| A | Modesto Nuts | Low-A West | Eric Farris |
| Rookie | ACL Mariners | Arizona Complex League | Austin Knight |
| Foreign Rookie | DSL Mariners 1 | Dominican Summer League | |
| Foreign Rookie | DSL Mariners 2 | Dominican Summer League | |