Mariners pitching prospect George Kirby training in Tacoma

Mariners To Outright Diego Castillo, Promote Bryce Miller

Mariners calling up top pitching prospect George Kirby to join starting rotation

George Kirby Is Combining the New and Old School - Baseball ProspectusBaseball Prospectus

George Kirby makes Spring Training debut

Mariners Prospect Update: Cade Marlowe Heating Up in Tacoma

Mariners reportedly promoting top pitching prospect Bryce Miller to start vs. Oakland on Tuesday, DFA RHP Diego Castillo - Lookout Landing

Mariners position overview: Could Seattle have something special brewing with its starting pitching?, College Sports

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

Niagara product Matt Brash sent to Triple-A, will move to 'pen, Sports

Hard lessons learned for Mariners rookie Matt Brash force him back to the minor leagues, Mariners

Mariners calling up top pitching prospect George Kirby to join starting rotation, Sports

George Kirby called up to Mariners

Mariners promote top pitching prospect George Kirby from Double-A

A few Seattle Mariners prospects moved up the ladder this week

Mariners Minor League Report — April 15, by Mariners PR