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What's the next step for Mariners' George Kirby after big rookie season? - Seattle Sports
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So long, Everett: AquaSox pitchers Hancock, Kirby promoted
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Seattle Mariners 2019 Midseason Top 50 Prospects
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Rye High School grad George Kirby set to debut for Seattle Mariners
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Seattle Mariners call up top pitching prospect George Kirby; righty will start Sunday vs. Rays
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George Kirby sharp, Justin Dunn solid: Mariners Prospect Wrap — August 10, 2019
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Mariners Top Prospects
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George Kirby Stats & Scouting Report — College Baseball, MLB Draft, Prospects - Baseball America
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Mariners lineup news: Top pitching prospect George Kirby promoted to Majors, will make debut Sunday vs. Rays - DraftKings Network
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Prospect season in review: Seattle Mariners' right-hander George Kirby
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George Kirby makes MLB pitching debut for Mariners
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George Kirby, Mariners' pitching have promising future