White Sox ace Lucas Giolito and St. Louis Cardinals pitcher Jack Flaherty were teammates at Harvard-Westlake High School in Los Angeles. Now they’re facing off against each other as big leaguers for the very first time Tuesday night on the South Side. Chuck Garfien speaks with their high school baseball coach, Matt LaCour, who tells stories about their prep careers and what it took for them to become elite major league pitchers. LaCour, who is coming to town for the big game, talks about what it will be like being at Guaranteed Rate Field to watch his former pitchers go head-to-head.

(2:46) - How did the legendary high school rotation featuring Lucas Giolito, Max Fried, and Jack Flaherty come together?

(7:30) - When Matt LaCour first saw that Lucas Giolito had the potential to be something special

(10:40) - The time Giolito accidentally hit Max Fried in the face with a pitch in high school

(15:20) - The text LaCour received from Flaherty telling him he needs to come to Chicago for the game

(20:05) - Watching the growth of Giolito in the majors

(35:10) - LaCour on his former pitching coach Ethan Katz coaching Giolito in the majors

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