Seattle Mariners 2020 Season Schedule
| 7/24/2020 | 6:10 PM | Mariners at Astros | Minute Maid Park – Houston |
| 7/25/2020 | 1:10 PM | Mariners at Astros | Minute Maid Park – Houston |
| 7/26/2020 | 11:10 AM | Mariners at Astros | Minute Maid Park – Houston |
| 7/27/2020 | 4:10 PM | Mariners at Astros | Minute Maid Park – Houston |
| 7/28/2020 | 6:40 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 7/29/2020 | 7:10 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 7/30/2020 | 6:40 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 7/31/2020 | 6:40 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 8/1/2020 | 6:10 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 8/2/2020 | 1:10 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 8/3/2020 | 6:10 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 8/4/2020 | 7:10 PM | Angels at Mariners | T-Mobile Park – Seattle |
| 8/5/2020 | 6:40 PM | Angels at Mariners | T-Mobile Park – Seattle |
| 8/6/2020 | 1:10 PM | Angels at Mariners | T-Mobile Park – Seattle |
| 8/7/2020 | 6:40 PM | Rockies at Mariners | T-Mobile Park – Seattle |
| 8/8/2020 | 6:10 PM | Rockies at Mariners | T-Mobile Park – Seattle |
| 8/9/2020 | 1:10 PM | Rockies at Mariners | T-Mobile Park – Seattle |
| 8/10/2020 | 6:05 PM | Mariners at Rangers | Globe Life Field – Arlington |
| 8/11/2020 | 6:05 PM | Mariners at Rangers | Globe Life Field – Arlington |
| 8/12/2020 | 6:05 PM | Mariners at Rangers | Globe Life Field – Arlington |
| 8/14/2020 | 6:10 PM | Mariners at Astros | Minute Maid Park – Houston |
| 8/15/2020 | 4:10 PM | Mariners at Astros | Minute Maid Park – Houston |
| 8/16/2020 | 11:10 AM | Mariners at Astros | Minute Maid Park – Houston |
| 8/17/2020 | 6:40 PM | Mariners at Dodgers | Dodger Stadium – Los Angeles |
| 8/18/2020 | 4:10 PM | Mariners at Dodgers | Dodger Stadium – Los Angeles |
| 8/19/2020 | 6:40 PM | Dodgers at Mariners | T-Mobile Park – Seattle |
| 8/20/2020 | 4:10 PM | Dodgers at Mariners | T-Mobile Park – Seattle |
| 8/21/2020 | 6:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 8/22/2020 | 6:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 8/23/2020 | 1:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 8/25/2020 | 6:10 PM | Mariners at Padres | Petco Park – San Diego |
| 8/26/2020 | 6:10 PM | Mariners at Padres | Petco Park – San Diego |
| 8/27/2020 | 1:10 PM | Mariners at Padres | Petco Park – San Diego |
| 8/28/2020 | 6:40 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 8/29/2020 | 6:40 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 8/30/2020 | 1:10 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 8/31/2020 | 1:10 PM | Mariners at Angels | Angel Stadium – Anaheim |
| 9/1/2020 | 6:40 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 9/2/2020 | 6:40 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 9/3/2020 | 1:10 PM | Athletics at Mariners | T-Mobile Park – Seattle |
| 9/4/2020 | 6:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 9/5/2020 | 6:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 9/6/2020 | 1:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 9/7/2020 | 1:10 PM | Rangers at Mariners | T-Mobile Park – Seattle |
| 9/8/2020 | 6:45 PM | Mariners at Giants | Oracle Park – San Francisco |
| 9/9/2020 | 6:45 PM | Mariners at Giants | Oracle Park – San Francisco |
| 9/11/2020 | 6:40 PM | Mariners at D-backs | Chase Field – Phoenix |
| 9/12/2020 | 5:10 PM | Mariners at D-backs | Chase Field – Phoenix |
| 9/13/2020 | 1:10 PM | Mariners at D-backs | Chase Field – Phoenix |
| 9/15/2020 | 6:40 PM | Giants at Mariners | T-Mobile Park – Seattle |
| 9/16/2020 | 6:40 PM | Giants at Mariners | T-Mobile Park – Seattle |
| 9/18/2020 | 6:40 PM | Padres at Mariners | T-Mobile Park – Seattle |
| 9/19/2020 | 6:10 PM | Padres at Mariners | T-Mobile Park – Seattle |
| 9/20/2020 | 1:10 PM | Padres at Mariners | T-Mobile Park – Seattle |
| 9/21/2020 | 6:10 PM | Astros at Mariners | T-Mobile Park – Seattle |
| 9/22/2020 | 6:10 PM | Astros at Mariners | T-Mobile Park – Seattle |
| 9/23/2020 | 3:40 PM | Astros at Mariners | T-Mobile Park – Seattle |
| 9/25/2020 | 6:40 PM | Mariners at Athletics | Oakland Coliseum – Oakland |
| 9/26/2020 | 1:10 PM | Mariners at Athletics | Oakland Coliseum – Oakland |
| 9/27/2020 | 12:10 PM | Mariners at Athletics | Oakland Coliseum – Oakland |
