Opening day for the Mariners is Thursday as they kick off the season with a home series against the Sacramento Athletics. Here's what to know.

Fans frustrated M’s didn’t spend to improve an offense that’s been wasting World Series-level pitching. But they keep coming back.

It’s been nearly six months since the 2024 regular season ended, but the Athletics and Mariners will pick up right where they left off, having finished last year facing each other at T-Mobile Park, which is where they will meet Thursday on Opening Day.

If there was ever a way to kick off a season and jump-start a frustrated fan base, it came in the Mariners' thrilling opening day win.

The largest free agent signing, really, was Jorge Polanco. A guy the Mariners let walk from the roster in November, only to bring him back at a reduced salary in hopes that it was injuries that truly reduced his impact on the lineup in 2024.

All main T-Mobile Park gates open 90 minutes before the first pitch. The T-Mobile 'Pen gate, located next to the Mariners' bullpen in centerfield, opens two hours before the first pitch. Fans can access the ‘Pen area of the ballpark until all other main gates open. Here is the summary of the policy from the Mariners' website.

The Seattle Mariners beat the A’s in a 4-2 affair on Opening Day. The difference in the game was Seattle’s biggest offseason move.

Before they played against the Athletics on Thursday, the Mariners brought out the family of Henderson, who played for both teams over a 25-year career. He died in December of 2024.