| Arizona Diamondbacks at Seattle Mariners Fri, 05/29/2026 7:10 PM PDT | Fri, 05/29/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Arizona Diamondbacks at Seattle Mariners Sat, 05/30/2026 7:10 PM PDT | Sat, 05/30/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Arizona Diamondbacks at Seattle Mariners Sun, 05/31/2026 1:10 PM PDT | Sun, 05/31/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Mon, 06/01/2026 6:40 PM PDT | Mon, 06/01/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Mon, 06/01/2026 6:40 PM PDT | Mon, 06/01/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Tue, 06/02/2026 6:40 PM PDT | Tue, 06/02/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Tue, 06/02/2026 6:40 PM PDT | Tue, 06/02/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Wed, 06/03/2026 12:40 PM PDT | Wed, 06/03/2026 12:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| New York Mets at Seattle Mariners Wed, 06/03/2026 12:40 PM PDT | Wed, 06/03/2026 12:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Tue, 06/16/2026 6:40 PM PDT | Tue, 06/16/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Tue, 06/16/2026 6:40 PM PDT | Tue, 06/16/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Wed, 06/17/2026 6:40 PM PDT | Wed, 06/17/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Wed, 06/17/2026 6:40 PM PDT | Wed, 06/17/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Thu, 06/18/2026 1:10 PM PDT | Thu, 06/18/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Baltimore Orioles at Seattle Mariners Thu, 06/18/2026 1:10 PM PDT | Thu, 06/18/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners Fri, 06/19/2026 7:10 PM PDT | Fri, 06/19/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners (Game 1) Sat, 06/20/2026 1:10 PM PDT | Sat, 06/20/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners (Game 1) Sat, 06/20/2026 1:10 PM PDT | Sat, 06/20/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners Sat, 06/20/2026 7:10 PM PDT | Sat, 06/20/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners Sun, 06/21/2026 1:10 PM PDT | Sun, 06/21/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Boston Red Sox at Seattle Mariners Sun, 06/21/2026 1:10 PM PDT | Sun, 06/21/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Mon, 06/29/2026 6:40 PM PDT | Mon, 06/29/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Mon, 06/29/2026 6:40 PM PDT | Mon, 06/29/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Tue, 06/30/2026 6:40 PM PDT | Tue, 06/30/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Tue, 06/30/2026 6:40 PM PDT | Tue, 06/30/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Thu, 07/02/2026 6:40 PM PDT | Thu, 07/02/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Los Angeles Angels at Seattle Mariners Thu, 07/02/2026 6:40 PM PDT | Thu, 07/02/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Fri, 07/03/2026 12:00 AM PDT | Fri, 07/03/2026 12:00 AM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Fri, 07/03/2026 7:10 PM PDT | Fri, 07/03/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Sat, 07/04/2026 1:10 PM PDT | Sat, 07/04/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Sat, 07/04/2026 1:10 PM PDT | Sat, 07/04/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Sun, 07/05/2026 1:10 PM PDT | Sun, 07/05/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Toronto Blue Jays at Seattle Mariners Sun, 07/05/2026 2:00 PM PDT | Sun, 07/05/2026 2:00 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Fri, 07/17/2026 7:10 PM PDT | Fri, 07/17/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Fri, 07/17/2026 7:10 PM PDT | Fri, 07/17/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Sat, 07/18/2026 5:08 PM PDT | Sat, 07/18/2026 5:08 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Sat, 07/18/2026 7:10 PM PDT | Sat, 07/18/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Sun, 07/19/2026 1:10 PM PDT | Sun, 07/19/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| San Francisco Giants at Seattle Mariners Sun, 07/19/2026 1:10 PM PDT | Sun, 07/19/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Cincinnati Reds at Seattle Mariners Mon, 07/20/2026 6:40 PM PDT | Mon, 07/20/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Cincinnati Reds at Seattle Mariners Tue, 07/21/2026 6:40 PM PDT | Tue, 07/21/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Cincinnati Reds at Seattle Mariners Wed, 07/22/2026 12:40 PM PDT | Wed, 07/22/2026 12:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Fri, 07/31/2026 7:10 PM PDT | Fri, 07/31/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Fri, 07/31/2026 7:10 PM PDT | Fri, 07/31/2026 7:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Sat, 08/01/2026 1:10 PM PDT | Sat, 08/01/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Sat, 08/01/2026 1:10 PM PDT | Sat, 08/01/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Sun, 08/02/2026 1:10 PM PDT | Sun, 08/02/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Minnesota Twins at Seattle Mariners Sun, 08/02/2026 1:10 PM PDT | Sun, 08/02/2026 1:10 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Detroit Tigers at Seattle Mariners Tue, 08/04/2026 6:40 PM PDT | Tue, 08/04/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
| Detroit Tigers at Seattle Mariners Tue, 08/04/2026 6:40 PM PDT | Tue, 08/04/2026 6:40 PM PDT | Seattle Mariners | T-Mobile Park | Seattle | Flat | - |
