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 bullpen will be one of ... In those outings with the Athletics and Kansas City Royals, Klein posted an 11.05 ERA with seven strikeouts in 7.1 innings pitched.

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 ...

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

The Seattle Thunderbirds scored three goals in the second period and added another in the third to surge to a 4-1 win over the visiting Victoria Royals on Friday night. Matej Pekar tied the game ...

The Athletics traded Klein to the Mariners on Tuesday in exchange for international slot money. After the trade, Klein was added to Seattle's 40-man roster. The right-hander was designated for ...