For the first time since the Seattle Mariners acquired Jackson Kowar in December 2023, the relief pitcher is on the team's active roster.

Mariners' biggest star has quietly been their most clutch arm late in games during the 2025 season, and it's only getting better.

I mean, like, is there an argument against it at this point?" Jeff Passan said of Seattle Mariners closer Andrés Muñoz.

Cal Raleigh hit a go-ahead, two-run homer off the right field foul pole and the Seattle Mariners beat the Houston Astros 5-3.

The Mariners signed Luis F ... third base and batting fifth for the series opener against the Giants. — Relief pitcher Hagen Danner was designated for assignment Friday morning to make room ...

To increase their chances of making the playoffs, the Seattle Mariners have acquired a top relief pitcher days before the trade deadline. As it stands, the Mariners are on the cusp of making it ...

J.P. Crawford hit an RBI single down the left-field line in the 11th inning as the Seattle Mariners ended their four-game losing streak by beating the New York Yankees 2-1 on Tuesday night.

Thrown off his regularly scheduled Saturday routine, Jurrangelo Cijntje didn't flinch. The Mariners' switch-pitching prospect ...

Hahn re-signed with the Mariners after being outrighted off their 40-man roster last month, and that decision has paid off as he now finds himself back in the big leagues. The 35-year-old permitted ...

The Seattle Mariners led the majors ... mixing and matching to build a quality relief corps in recent years. The Los Angeles Dodgers made upgrading the pitching staff the focal point of the ...

He's also not a switch-pitcher in a committed ... who made 61 relief appearances between 2015 and 2020 for six different teams, including the Mariners. It remains to be seen whether Cijntje ...

just two of the ten combined relief pitchers allowed runs — single scores apiece. The Yankees simply couldn’t get the one hit they needed, and fell to the Mariners in 11 innings, 2-1.