| 2021 Seattle Mariners | ||
|---|---|---|
| League | American League | |
| Division | West | |
| Ballpark | T-Mobile Park | |
| City | Seattle, Washington | |
| Record | 90–72 (.556) | |
| Divisional place | 2nd | |
| Owners | Baseball Club of Seattle, LP, represented by CEO John Stanton | |
| Managers | Scott Servais | |
| Television | Root Sports Northwest (Dave Sims, Aaron Goldsmith, Mike Blowers) | |
| Radio | ESPN-710 Seattle Mariners Radio Network (Rick Rizzs, Aaron Goldsmith, Dave Sims) | |
| ||
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.