Former Seattle Mariners catcher and farmhand Brian O'Keefe has earned an invite to spring training with the Kansas City Royals. He joins the likes of Austin Cox and Cavan Biggio in that group.

The Seattle Mariners acquired right-handed reliever Will Klein from the Oakland Athletics, the team announced on Tuesday ...

Kevin Seitzer, who joined the Seattle Mariners after years with Atlanta, has embraced the analytics-driven changes in MLB.

The Kansas City Royals will get ... O’Keefe, meanwhile, was formerly with the Seattle Mariners. He hit .281 with 18 home runs and 58 RBIs in the Royals organization last season at Triple-A ...

Former Seattle Mariners infielder Adam Frazier has signed a one-year deal with the Pittsburgh Pirates, according to Mark ...

The Mariners have been known for their robust pitching development, including current big league rotation members Logan Gilbert, George Kirby and Bryce Miller. In a fun twist, when MLB Pipeline ...

The Mariners have acquired right-hander Will Klein from the Athletics, according to announcements from both clubs. The latter ...

The Mariners announced Tuesday that infielder/outfielder Samad Taylor, whom they designated for assignment last week, passed ...