The Seattle Mariners opened up a spot for new first baseman Josh Naylor to join the roster by sending down utility man Miles Mastrobuoni to Triple-A Tacoma.

The Mariners should move on from these 3 players, but likely won't RHP Trent Thornton Last year, Thornton was a decent setup option with a 3.61 ERA and 3.47 FIP.

Brady Farkas explains how Cal Raleigh is a player who’s in his 4th year who is showing leadership and elevating those around him by putting some pressure on his teammates and it's exactly what the Seattle Mariners need.

The 2025 MLB trade deadline is Thursday, July 31 at 6 p.m. ET, but there will be plenty of trade talk and transactions that take place beforehand. Here are trade rumors around the sport:

The Mariners announced that they have selected the contract of left-hander Brandyn Garcia. Right-hander Juan Burgos has been optioned to Triple-A Tacoma as the corresponding active roster move. The 40-man roster had a vacancy but is now full.

The Mariners traded Swanson to the Blue Jays before the 2023 season for Teoscar Hernandez. He was excellent in Toronto in 2023, going 4-2 with a 2.97 ERA, but the wheels fell off in 2024.

The Mariners are expected to call up Jacques from Triple-A Tacoma, Ari Alexander of KPRC 2 Houston reports.. Jacques was acquired via trade from the Dodgers in early June and will be promoted ...

What does that mean for Mariners roster? June 19, 2025 at 6:00 am Updated June 19, 2025 at 6:01 am . By . Adam Jude. Seattle Times staff reporter.

The Seattle Mariners made a notable roster move on Monday, announcing that they have promoted highly-rated pitching prospect Brandyn Garcia to the big league ro

The Mariners designated Pop for assignment Saturday, Tim Booth of The Seattle Times reports. The move makes room on Seattle's 40-man roster for Juan Burgos, whose contract was selected from Triple ...