A special bond': High school coach of Flaherty, Fried and Giolito

High school teammates Lucas Giolito, Jack Flaherty face off

2020 Coaching Staff — Part II. Part II of this series takes a look at…, by San Francisco Giants

Jack Flaherty - Wikipedia

Lucas Giolito to face Jack Flaherty, his ex-high school teammate

High school teammates Lucas Giolito and Jack Flaherty square off

SoCal High School Teammates Pitch on Opening Day – NBC Los Angeles

White Sox pitcher Lucas Giolito, a Harvard-Westlake product, reunites with Ethan Katz - The Washington Post

High school teammates Lucas Giolito, Jack Flaherty face off

Chicago White Sox: Ethan Katz on coaching 2 major-leaguers in high school

World Series 2021 - Game 6 a high school reunion for MLB aces Max Fried, Jack Flaherty, Lucas Giolito - ESPN

Angels going for it with Ohtani, acquire pitchers Giolito, López from White Sox for prospects – The Denver Post

Phillies' Nick Pivetta aims to improve after offseason training with star pitchers Noah Syndergaard, Jack Flaherty and Lucas Giolito