Mariners pitching prospect George Kirby training in Tacoma

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A few Seattle Mariners prospects moved up the ladder this week

George Kirby Showed Ace Stuff in Rookie Campaign - Lookout Landing

Mariners rookie Matt Brash optioned back to AAA Tacoma after consecutive rough outings

THE MOJ: The hunter about to become the hunted for the Seattle Mariners - Mission City Record

Mariners pitching prospect George Kirby training in Tacoma

Mariners To Outright Diego Castillo, Promote Bryce Miller

Logan Gilbert and George Kirby: Anchors for Mariners now and into future

Josh Rojas homers as Mariners beat White Sox 6-3 for season-high 8th straight win

Seattle Mariners call up top pitching prospect George Kirby; righty will start Sunday vs. Rays

Mariners calling up top pitching prospect George Kirby from Travs

Mariners top pitching prospect George Kirby has more than just a fastball in his arsenal, Professional/National Sports

Mariners calling up top pitching prospect George Kirby - The Columbian