2021 Seattle Mariners

Franchise seasons · 2020s seasons

Independent, unofficial historical lineup simulator. Games here are simulated exhibitions, not historical results.

Compare historical seasons

Seattle Mariners franchise archive · Available years: 1977–2025 · 49 seasons.

These historical season records are separate from simulated exhibitions. — means the season record is unavailable. Year ranges describe this archive's coverage; team names reflect each season's historical name.

Same team, nearby years

Nearby franchise seasons and available statistics
Season	Record (W–L)	Batting rows	Pitching rows
2023 Seattle Mariners	88–74	22	35
2022 Seattle Mariners	90–72	31	29
2021 Seattle Mariners · Current season	90–72	33	38
2020 Seattle Mariners	27–33	21	29
2019 Seattle Mariners	68–94	27	42

Same era: other teams in 2021

More teams from 2021

Roster and season statistics

Only players appear here. Staff are excluded from lineup choices. — means a statistic is unavailable. A roster player may have no batting or pitching row if they did not appear in those tables.

Player	Position group	No.	Stat rows	AB	H	HR	AVG	IP	ERA	Rating
Tyler Anderson	Pitchers	31	both	2	0	0	.000	63.67	4.81	Average (49) — 339 of 556 pitchers in the available 2021 rosters An earned-run average of 4.81 over 63.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Matt Andriese	Pitchers	27	pitching	—	—	—	—	11.00	2.45	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Diego Castillo	Pitchers	63	pitching	—	—	—	—	22.00	2.86	Average (52) — 175 of 556 pitchers in the available 2021 rosters An earned-run average of 2.86 over 22.00 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
J. T. Chargois	Pitchers	84	No stat row	—	—	—	—	—	—	No rating The source has no pitching stat row for this player. You can still select this pitcher; the exhibition uses estimated performance.
Sean Doolittle	Pitchers	62	pitching	—	—	—	—	11.33	4.76	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Robert Dugger	Pitchers	30	pitching	—	—	—	—	25.67	7.36	Average (45) — 494 of 556 pitchers in the available 2021 rosters An earned-run average of 7.36 over 25.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Justin Dunn	Pitchers	35	both	3	1	0	.333	50.33	3.75	Average (51) — 235 of 556 pitchers in the available 2021 rosters An earned-run average of 3.75 over 50.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Aaron Fletcher	Pitchers	41	pitching	—	—	—	—	3.67	12.27	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Chris Flexen	Pitchers	77	both	3	0	0	.000	179.67	3.61	Average (53) — 114 of 556 pitchers in the available 2021 rosters An earned-run average of 3.61 over 179.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Logan Gilbert	Pitchers	36	pitching	—	—	—	—	119.33	4.68	Average (49) — 339 of 556 pitchers in the available 2021 rosters An earned-run average of 4.68 over 119.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Marco Gonzales	Pitchers	7	pitching	—	—	—	—	143.33	3.96	Average (52) — 175 of 556 pitchers in the available 2021 rosters An earned-run average of 3.96 over 143.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Kendall Graveman	Pitchers	49	pitching	—	—	—	—	33.00	0.82	Average (57) — 15 of 556 pitchers in the available 2021 rosters An earned-run average of 0.82 over 33.00 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Yusei Kikuchi	Pitchers	18	both	2	0	0	.000	157.00	4.41	Average (50) — 281 of 556 pitchers in the available 2021 rosters An earned-run average of 4.41 over 157.00 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Brady Lail	Pitchers	62	pitching	—	—	—	—	2.00	13.50	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Nick Margevicius	Pitchers	52	pitching	—	—	—	—	12.00	8.25	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Darren McCaughan	Pitchers	45	both	2	0	0	.000	9.00	8.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Keynan Middleton	Pitchers	99	pitching	—	—	—	—	31.00	4.94	Average (49) — 339 of 556 pitchers in the available 2021 rosters An earned-run average of 4.94 over 31.00 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Wyatt Mills	Pitchers	40	pitching	—	—	—	—	12.67	9.95	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Anthony Misiewicz	Pitchers	38	pitching	—	—	—	—	54.67	4.61	Average (49) — 339 of 556 pitchers in the available 2021 rosters An earned-run average of 4.61 over 54.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Rafael Montero	Pitchers	47	pitching	—	—	—	—	43.33	7.27	Below average (43) — 529 of 556 pitchers in the available 2021 rosters An earned-run average of 7.27 over 43.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Andrés Muñoz	Pitchers	54	pitching	—	—	—	—	0.67	0.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Ljay Newsome	Pitchers	74	pitching	—	—	—	—	14.67	7.98	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Vinny Nittoli	Pitchers	46	pitching	—	—	—	—	1.00	18.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
James Paxton	Pitchers	44	pitching	—	—	—	—	1.33	6.75	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Yohan Ramírez	Pitchers	55	pitching	—	—	—	—	27.67	3.90	Average (51) — 235 of 556 pitchers in the available 2021 rosters An earned-run average of 3.90 over 27.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Yacksel Ríos	Pitchers	45	pitching	—	—	—	—	3.00	9.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Casey Sadler	Pitchers	65	pitching	—	—	—	—	40.33	0.67	Average (58) — 8 of 556 pitchers in the available 2021 rosters An earned-run average of 0.67 over 40.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Hector Santiago	Pitchers	57	pitching	—	—	—	—	26.33	3.42	Average (51) — 235 of 556 pitchers in the available 2021 rosters An earned-run average of 3.42 over 26.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Paul Sewald	Pitchers	37	pitching	—	—	—	—	64.67	3.06	Average (54) — 76 of 556 pitchers in the available 2021 rosters An earned-run average of 3.06 over 64.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Justus Sheffield	Pitchers	33	both	2	1	0	.500	80.33	6.83	Below average (42) — 543 of 556 pitchers in the available 2021 rosters An earned-run average of 6.83 over 80.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Joe Smith	Pitchers	43	pitching	—	—	—	—	18.00	2.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Drew Steckenrider	Pitchers	16	pitching	—	—	—	—	67.67	2.00	Average (57) — 15 of 556 pitchers in the available 2021 rosters An earned-run average of 2.00 over 67.67 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Erik Swanson	Pitchers	50	pitching	—	—	—	—	35.33	3.31	Average (52) — 175 of 556 pitchers in the available 2021 rosters An earned-run average of 3.31 over 35.33 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Domingo Tapia	Pitchers	45	pitching	—	—	—	—	2.00	0.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Will Vest	Pitchers	53	pitching	—	—	—	—	35.00	6.17	Average (46) — 465 of 556 pitchers in the available 2021 rosters An earned-run average of 6.17 over 35.00 innings informs this pitching score. Lower earned-run averages indicate better run prevention. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Ryan Weber	Pitchers	53	pitching	—	—	—	—	3.00	6.00	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
Daniel Zamora	Pitchers	62	pitching	—	—	—	—	4.33	6.23	Not enough data The available innings and earned-run average do not support a reliable comparison. You can still select this pitcher; the exhibition uses estimated performance.
José Godoy	Catchers	78	batting	37	6	0	.162	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
Tom Murphy	Catchers	2	batting	277	56	11	.202	—	—	Average (46) — 398 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 277 at-bats and 11 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Cal Raleigh	Catchers	29	batting	139	25	2	.180	—	—	Below average (43) — 477 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 139 at-bats and 2 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Luis Torrens	Catchers	22	batting	346	84	18	.243	—	—	Average (53) — 156 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 346 at-bats and 18 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Eric Campbell	Infielders	5	batting	11	3	0	.273	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
J. P. Crawford	Infielders	3	No stat row	—	—	—	—	—	—	No rating The source has no batting stat row for this player. You can still select this batter; the exhibition uses estimated performance.
Ty France	Infielders	23	batting	571	166	18	.291	—	—	Average (59) — 37 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 571 at-bats and 18 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
José Marmolejos	Infielders	26	batting	106	17	4	.160	—	—	Below average (43) — 477 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 106 at-bats and 4 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Jack Mayfield	Infielders	8	both	34	6	0	.176	0.33	0.00	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
Dylan Moore	Infielders	25	batting	332	60	12	.181	—	—	Below average (42) — 490 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 332 at-bats and 12 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Jacob Nottingham	Infielders	13	batting	26	3	1	.115	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
Kyle Seager	Infielders	15	batting	603	128	35	.212	—	—	Average (48) — 336 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 603 at-bats and 35 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Abraham Toro	Infielders	13	batting	226	57	5	.252	—	—	Average (51) — 229 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 226 at-bats and 5 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Donnie Walton	Infielders	31,8	No stat row	—	—	—	—	—	—	No rating The source has no batting stat row for this player. You can still select this batter; the exhibition uses estimated performance.
Evan White	Infielders	12	batting	97	14	2	.144	—	—	Below average (41) — 504 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 97 at-bats and 2 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Jake Bauers	Outfielders	5	batting	182	40	2	.220	—	—	Average (46) — 398 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 182 at-bats and 2 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Braden Bishop	Outfielders	5	batting	4	1	0	.250	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
Jake Fraley	Outfielders	28	batting	214	45	9	.210	—	—	Average (47) — 365 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 214 at-bats and 9 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Sam Haggerty	Outfielders	0	No stat row	—	—	—	—	—	—	No rating The source has no batting stat row for this player. You can still select this batter; the exhibition uses estimated performance.
Mitch Haniger	Outfielders	17	batting	620	157	39	.253	—	—	Average (56) — 79 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 620 at-bats and 39 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Jarred Kelenic	Outfielders	10	batting	337	61	14	.181	—	—	Below average (42) — 490 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 337 at-bats and 14 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Kyle Lewis	Outfielders	1	batting	130	32	5	.246	—	—	Average (51) — 229 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 130 at-bats and 5 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Shed Long Jr.	Outfielders	4	batting	111	22	4	.198	—	—	Average (47) — 365 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 111 at-bats and 4 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Dillon Thomas	Outfielders	27	batting	9	1	0	.111	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.
Taylor Trammell	Outfielders	20	batting	156	25	8	.160	—	—	Below average (42) — 490 of 517 batters in the available 2021 rosters Batting average and home runs per at-bat inform this hitting score, using 156 at-bats and 8 home runs from the source. Shorter playing records receive more cautious scores. This rank compares simulation ratings, with equal scores sharing a rank; it is not a ranking of every player in the league.
Kevin Padlo	Outfielders	30	batting	1	0	0	.000	—	—	Not enough data The available at-bats and hits do not support a reliable comparison. You can still select this batter; the exhibition uses estimated performance.

Build a lineup

Exhibition rules use nine hitters, including a DH, and one pitcher. The numbered slots are the batting order. Pick each player once. Opponent: 2021 Arizona Diamondbacks. Players without a rating remain selectable with estimated performance.

Game to edit

1. C2. 1B3. 2B4. 3B5. SS6. LF7. CF8. RF9. DH

Pitcher Game seed

Keep the seed to replay the same game; change it to play a different exhibition.

Restore a lineup file

Simulated exhibition

Choose a lineup to play an exhibition.

Batting lines

Game log for the selected game

Roster and statistics adapted from Wikipedia contributors, 2021 Seattle Mariners season. Retrieved 2026-09-30T03:52:32.279224+00:00. Source material is under CC BY-SA 4.0. We grouped roster entries, excluded staff, joined stats by Wikipedia page title, converted baseball innings notation to outs, and derived approximate ratings and simulated outcomes. No official affiliation.