Kopech threw 45 pitches during a simulated game Tuesday, working on fastball command and changeups, Colleen Kane of the Chicago Tribune reports.

EDGE Analysis

Kopech's new to big-league camp this year and facing major-league hitters for the first time has its challenges. The 20-year-old right-hander was targeted by pitching coach Don Cooper for some personal instruction after he gave up four runs over one inning in his only spring appearance.