| Seattle Mariners at Kansas City Royals Fri, 05/22/2026 6:40 PM CDT | Fri, 05/22/2026 6:40 PM CDT | Kansas City Royals | Kauffman Stadium | Kansas City | Flat | - |
| Seattle Mariners at Kansas City Royals Sat, 05/23/2026 3:10 PM CDT | Sat, 05/23/2026 3:10 PM CDT | Kansas City Royals | Kauffman Stadium | Kansas City | Flat | - |
| Seattle Mariners at Kansas City Royals Sat, 05/23/2026 3:10 PM CDT | Sat, 05/23/2026 3:10 PM CDT | Kansas City Royals | Kauffman Stadium | Kansas City | Flat | - |
| Seattle Mariners at Kansas City Royals Sun, 05/24/2026 1:10 PM CDT | Sun, 05/24/2026 1:10 PM CDT | Kansas City Royals | Kauffman Stadium | Kansas City | Flat | - |
| Seattle Mariners at Athletics Mon, 05/25/2026 6:40 PM PDT | Mon, 05/25/2026 6:40 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| Seattle Mariners at Athletics Mon, 05/25/2026 6:40 PM PDT | Mon, 05/25/2026 6:40 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| Seattle Mariners at Athletics Tue, 05/26/2026 6:40 PM PDT | Tue, 05/26/2026 6:40 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| Seattle Mariners at Athletics Tue, 05/26/2026 6:40 PM PDT | Tue, 05/26/2026 6:40 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| Seattle Mariners at Athletics Wed, 05/27/2026 12:05 PM PDT | Wed, 05/27/2026 12:05 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| Seattle Mariners at Athletics Wed, 05/27/2026 12:05 PM PDT | Wed, 05/27/2026 12:05 PM PDT | Athletics | Sutter Health Park | West Sacramento | Flat | - |
| 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 | - |
| Seattle Mariners at Detroit Tigers Fri, 06/05/2026 5:40 PM EDT | Fri, 06/05/2026 5:40 PM EDT | Detroit Tigers | Comerica Park | Detroit | Flat | - |
| Seattle Mariners at Detroit Tigers Sat, 06/06/2026 12:10 PM EDT | Sat, 06/06/2026 12:10 PM EDT | Detroit Tigers | Comerica Park | Detroit | Flat | - |
| Seattle Mariners at Detroit Tigers Sun, 06/07/2026 12:40 PM EDT | Sun, 06/07/2026 12:40 PM EDT | Detroit Tigers | Comerica Park | Detroit | Flat | - |
| Seattle Mariners at Baltimore Orioles Mon, 06/08/2026 6:35 PM EDT | Mon, 06/08/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Mon, 06/08/2026 6:35 PM EDT | Mon, 06/08/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Tue, 06/09/2026 6:35 PM EDT | Tue, 06/09/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Tue, 06/09/2026 6:35 PM EDT | Tue, 06/09/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Wed, 06/10/2026 6:35 PM EDT | Wed, 06/10/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Wed, 06/10/2026 6:35 PM EDT | Wed, 06/10/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Thu, 06/11/2026 6:35 PM EDT | Thu, 06/11/2026 6:35 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Baltimore Orioles Thu, 06/11/2026 7:05 PM EDT | Thu, 06/11/2026 7:05 PM EDT | Baltimore Orioles | Oriole Park at Camden Yards | Baltimore | Flat | - |
| Seattle Mariners at Washington Nationals Fri, 06/12/2026 6:45 PM EDT | Fri, 06/12/2026 6:45 PM EDT | Washington Nationals | Nationals Park | Washington | Flat | - |
| Seattle Mariners at Washington Nationals Sat, 06/13/2026 4:05 PM EDT | Sat, 06/13/2026 4:05 PM EDT | Washington Nationals | Nationals Park | Washington | Flat | - |
| Seattle Mariners at Washington Nationals Sun, 06/14/2026 1:35 PM EDT | Sun, 06/14/2026 1:35 PM EDT | Washington Nationals | Nationals Park | Washington | 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 | - |
| Seattle Mariners at Pittsburgh Pirates Tue, 06/23/2026 6:40 PM EDT | Tue, 06/23/2026 6:40 PM EDT | Pittsburgh Pirates | PNC Park | Pittsburgh | Flat | - |
| Seattle Mariners at Pittsburgh Pirates Tue, 06/23/2026 6:40 PM EDT | Tue, 06/23/2026 6:40 PM EDT | Pittsburgh Pirates | PNC Park | Pittsburgh | Flat | - |
| Seattle Mariners at Pittsburgh Pirates Wed, 06/24/2026 6:40 PM EDT | Wed, 06/24/2026 6:40 PM EDT | Pittsburgh Pirates | PNC Park | Pittsburgh | Flat | - |
| Seattle Mariners at Pittsburgh Pirates Wed, 06/24/2026 6:40 PM EDT | Wed, 06/24/2026 6:40 PM EDT | Pittsburgh Pirates | PNC Park | Pittsburgh | Flat | - |
| Seattle Mariners at Pittsburgh Pirates Thu, 06/25/2026 12:35 PM EDT | Thu, 06/25/2026 12:35 PM EDT | Pittsburgh Pirates | PNC Park | Pittsburgh | Flat | - |
