The Mariners already learned a difficult third-base lesson, and a rumored Matt Chapman trade with the Giants could put them right back in the same awkward spot.

The Athletics, who lead the Seattle Mariners in the AL West, acquired switch-hitting catcher Jonah Heim from the Atlanta ...

The Athletics have acquired left-handed pitcher José Suarez from the Seattle Mariners in exchange for cash considerations and ...

The Athletics and Seattle Mariners made a notable trade on Thursday afternoon. Both clubs announced that left-hander Jose ...

If the Seattle Mariners end up trading a start this summer, it would be a game-changer ahead of the deadline.

Rafael Devers could be a trade candidate if the Giants keep struggling. Perhaps the Mariners could make a bad-contract swap to land him.

The Mariners designate swingman José Suarez for assignment after just one appearance with the club. Read more at MLB Trade ...