2021 Seattle Mariners Schedule and Results
Back to all Seattle Mariners seasons
For 2021, the Seattle Mariners had a record of 90 wins and 72 losses for a winning percentage of 0.556.
The Seattle Mariners did not play in the 2021 postseason.
All major league games for Seattle Mariners in 2021 ()
| Date | Team | @ | Opponent | Win/Loss | RScored | RAllowed | ||
|---|---|---|---|---|---|---|---|---|
| April 1, 2021 | Seattle Mariners | San Francisco Giants | — | — | — | Details | Play by Play | |
| April 2, 2021 | Seattle Mariners | San Francisco Giants | — | — | — | Details | Play by Play | |
| April 3, 2021 | Seattle Mariners | San Francisco Giants | — | — | — | Details | Play by Play | |
| April 5, 2021 | Seattle Mariners | Chicago White Sox | — | — | — | Details | Play by Play | |
| April 6, 2021 | Seattle Mariners | Chicago White Sox | — | — | — | Details | Play by Play | |
| April 7, 2021 | Seattle Mariners | Chicago White Sox | — | — | — | Details | Play by Play | |
| April 8, 2021 | Seattle Mariners | @ | Minnesota Twins | — | — | — | Details | Play by Play |
| April 10, 2021 | Seattle Mariners | @ | Minnesota Twins | — | — | — | Details | Play by Play |
| April 11, 2021 | Seattle Mariners | @ | Minnesota Twins | — | — | — | Details | Play by Play |
| April 13, 2021 | Seattle Mariners | @ | Baltimore Orioles | — | — | — | Details | Play by Play |
| April 13, 2021 | Seattle Mariners | @ | Baltimore Orioles | — | — | — | Details | Play by Play |
| April 15, 2021 | Seattle Mariners | @ | Baltimore Orioles | — | — | — | Details | Play by Play |
| April 15, 2021 | Seattle Mariners | @ | Baltimore Orioles | — | — | — | Details | Play by Play |
| April 16, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| April 17, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| April 18, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| April 19, 2021 | Seattle Mariners | Los Angeles Dodgers | — | — | — | Details | Play by Play | |
| April 20, 2021 | Seattle Mariners | Los Angeles Dodgers | — | — | — | Details | Play by Play | |
| April 22, 2021 | Seattle Mariners | @ | Boston Red Sox | — | — | — | Details | Play by Play |
| April 23, 2021 | Seattle Mariners | @ | Boston Red Sox | — | — | — | Details | Play by Play |
| April 24, 2021 | Seattle Mariners | @ | Boston Red Sox | — | — | — | Details | Play by Play |
| April 25, 2021 | Seattle Mariners | @ | Boston Red Sox | — | — | — | Details | Play by Play |
| April 26, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| April 27, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| April 28, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| April 29, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| April 30, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| May 1, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| May 2, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| May 3, 2021 | Seattle Mariners | Baltimore Orioles | — | — | — | Details | Play by Play | |
| May 4, 2021 | Seattle Mariners | Baltimore Orioles | — | — | — | Details | Play by Play | |
| May 5, 2021 | Seattle Mariners | Baltimore Orioles | — | — | — | Details | Play by Play | |
| May 7, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| May 8, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| May 9, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| May 11, 2021 | Seattle Mariners | @ | Los Angeles Dodgers | — | — | — | Details | Play by Play |
| May 12, 2021 | Seattle Mariners | @ | Los Angeles Dodgers | — | — | — | Details | Play by Play |
| May 13, 2021 | Seattle Mariners | Cleveland Indians | — | — | — | Details | Play by Play | |
| May 14, 2021 | Seattle Mariners | Cleveland Indians | — | — | — | Details | Play by Play | |
| May 15, 2021 | Seattle Mariners | Cleveland Indians | — | — | — | Details | Play by Play | |
| May 16, 2021 | Seattle Mariners | Cleveland Indians | — | — | — | Details | Play by Play | |
| May 17, 2021 | Seattle Mariners | Detroit Tigers | — | — | — | Details | Play by Play | |
| May 18, 2021 | Seattle Mariners | Detroit Tigers | — | — | — | Details | Play by Play | |
| May 19, 2021 | Seattle Mariners | Detroit Tigers | — | — | — | Details | Play by Play | |
| May 21, 2021 | Seattle Mariners | @ | San Diego Padres | — | — | — | Details | Play by Play |
| May 22, 2021 | Seattle Mariners | @ | San Diego Padres | — | — | — | Details | Play by Play |
| May 23, 2021 | Seattle Mariners | @ | San Diego Padres | — | — | — | Details | Play by Play |
| May 24, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| May 25, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| May 26, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| May 27, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| May 28, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| May 29, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| May 30, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| May 31, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| June 1, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| June 2, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| June 3, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| June 4, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| June 5, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| June 6, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| June 8, 2021 | Seattle Mariners | @ | Detroit Tigers | — | — | — | Details | Play by Play |
| June 9, 2021 | Seattle Mariners | @ | Detroit Tigers | — | — | — | Details | Play by Play |
| June 10, 2021 | Seattle Mariners | @ | Detroit Tigers | — | — | — | Details | Play by Play |
| June 11, 2021 | Seattle Mariners | @ | Cleveland Indians | — | — | — | Details | Play by Play |
| June 12, 2021 | Seattle Mariners | @ | Cleveland Indians | — | — | — | Details | Play by Play |
| June 13, 2021 | Seattle Mariners | @ | Cleveland Indians | — | — | — | Details | Play by Play |
| June 14, 2021 | Seattle Mariners | Minnesota Twins | — | — | — | Details | Play by Play | |
| June 15, 2021 | Seattle Mariners | Minnesota Twins | — | — | — | Details | Play by Play | |
| June 16, 2021 | Seattle Mariners | Minnesota Twins | — | — | — | Details | Play by Play | |
| June 17, 2021 | Seattle Mariners | Tampa Bay Rays | — | — | — | Details | Play by Play | |
| June 18, 2021 | Seattle Mariners | Tampa Bay Rays | — | — | — | Details | Play by Play | |
| June 19, 2021 | Seattle Mariners | Tampa Bay Rays | — | — | — | Details | Play by Play | |
| June 20, 2021 | Seattle Mariners | Tampa Bay Rays | — | — | — | Details | Play by Play | |
| June 22, 2021 | Seattle Mariners | Colorado Rockies | — | — | — | Details | Play by Play | |
| June 23, 2021 | Seattle Mariners | Colorado Rockies | — | — | — | Details | Play by Play | |
| June 25, 2021 | Seattle Mariners | @ | Chicago White Sox | — | — | — | Details | Play by Play |
| June 26, 2021 | Seattle Mariners | @ | Chicago White Sox | — | — | — | Details | Play by Play |
| June 27, 2021 | Seattle Mariners | @ | Chicago White Sox | — | — | — | Details | Play by Play |
| June 29, 2021 | Seattle Mariners | @ | Toronto Blue Jays | — | — | — | Details | Play by Play |
| June 30, 2021 | Seattle Mariners | @ | Toronto Blue Jays | — | — | — | Details | Play by Play |
| July 1, 2021 | Seattle Mariners | @ | Toronto Blue Jays | — | — | — | Details | Play by Play |
| July 2, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| July 3, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| July 4, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| July 6, 2021 | Seattle Mariners | New York Yankees | — | — | — | Details | Play by Play | |
| July 7, 2021 | Seattle Mariners | New York Yankees | — | — | — | Details | Play by Play | |
| July 8, 2021 | Seattle Mariners | New York Yankees | — | — | — | Details | Play by Play | |
| July 9, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| July 10, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| July 11, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| July 16, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| July 17, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| July 18, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| July 20, 2021 | Seattle Mariners | @ | Colorado Rockies | — | — | — | Details | Play by Play |
| July 21, 2021 | Seattle Mariners | @ | Colorado Rockies | — | — | — | Details | Play by Play |
| July 22, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| July 23, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| July 24, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| July 25, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| July 26, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| July 27, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| July 28, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| July 30, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| July 31, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| August 1, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| August 2, 2021 | Seattle Mariners | @ | Tampa Bay Rays | — | — | — | Details | Play by Play |
| August 3, 2021 | Seattle Mariners | @ | Tampa Bay Rays | — | — | — | Details | Play by Play |
| August 4, 2021 | Seattle Mariners | @ | Tampa Bay Rays | — | — | — | Details | Play by Play |
| August 5, 2021 | Seattle Mariners | @ | New York Yankees | — | — | — | Details | Play by Play |
| August 6, 2021 | Seattle Mariners | @ | New York Yankees | — | — | — | Details | Play by Play |
| August 7, 2021 | Seattle Mariners | @ | New York Yankees | — | — | — | Details | Play by Play |
| August 8, 2021 | Seattle Mariners | @ | New York Yankees | — | — | — | Details | Play by Play |
| August 10, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| August 11, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| August 12, 2021 | Seattle Mariners | Texas Rangers | — | — | — | Details | Play by Play | |
| August 13, 2021 | Seattle Mariners | Toronto Blue Jays | — | — | — | Details | Play by Play | |
| August 14, 2021 | Seattle Mariners | Toronto Blue Jays | — | — | — | Details | Play by Play | |
| August 15, 2021 | Seattle Mariners | Toronto Blue Jays | — | — | — | Details | Play by Play | |
| August 17, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| August 18, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| August 19, 2021 | Seattle Mariners | @ | Texas Rangers | — | — | — | Details | Play by Play |
| August 20, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| August 21, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| August 22, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| August 23, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| August 24, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| August 26, 2021 | Seattle Mariners | Kansas City Royals | — | — | — | Details | Play by Play | |
| August 27, 2021 | Seattle Mariners | Kansas City Royals | — | — | — | Details | Play by Play | |
| August 28, 2021 | Seattle Mariners | Kansas City Royals | — | — | — | Details | Play by Play | |
| August 29, 2021 | Seattle Mariners | Kansas City Royals | — | — | — | Details | Play by Play | |
| August 30, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| August 31, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| September 1, 2021 | Seattle Mariners | Houston Astros | — | — | — | Details | Play by Play | |
| September 3, 2021 | Seattle Mariners | @ | Arizona Diamondbacks | — | — | — | Details | Play by Play |
| September 4, 2021 | Seattle Mariners | @ | Arizona Diamondbacks | — | — | — | Details | Play by Play |
| September 5, 2021 | Seattle Mariners | @ | Arizona Diamondbacks | — | — | — | Details | Play by Play |
| September 6, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| September 7, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| September 8, 2021 | Seattle Mariners | @ | Houston Astros | — | — | — | Details | Play by Play |
| September 10, 2021 | Seattle Mariners | Arizona Diamondbacks | — | — | — | Details | Play by Play | |
| September 11, 2021 | Seattle Mariners | Arizona Diamondbacks | — | — | — | Details | Play by Play | |
| September 12, 2021 | Seattle Mariners | Arizona Diamondbacks | — | — | — | Details | Play by Play | |
| September 13, 2021 | Seattle Mariners | Boston Red Sox | — | — | — | Details | Play by Play | |
| September 14, 2021 | Seattle Mariners | Boston Red Sox | — | — | — | Details | Play by Play | |
| September 15, 2021 | Seattle Mariners | Boston Red Sox | — | — | — | Details | Play by Play | |
| September 17, 2021 | Seattle Mariners | @ | Kansas City Royals | — | — | — | Details | Play by Play |
| September 18, 2021 | Seattle Mariners | @ | Kansas City Royals | — | — | — | Details | Play by Play |
| September 19, 2021 | Seattle Mariners | @ | Kansas City Royals | — | — | — | Details | Play by Play |
| September 20, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| September 21, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| September 22, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| September 23, 2021 | Seattle Mariners | @ | Oakland Athletics | — | — | — | Details | Play by Play |
| September 24, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| September 25, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| September 26, 2021 | Seattle Mariners | @ | Los Angeles Angels | — | — | — | Details | Play by Play |
| September 27, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| September 28, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| September 29, 2021 | Seattle Mariners | Oakland Athletics | — | — | — | Details | Play by Play | |
| October 1, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| October 2, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play | |
| October 3, 2021 | Seattle Mariners | Los Angeles Angels | — | — | — | Details | Play by Play |
