Crow-Armstrong will start in center field and bat eighth Tuesday at Colorado, Taylor McGregor of Marquee Sports Network reports.
Crow-Armstrong made his major-league debut off the bench Monday and is now getting his first big-league start as the Cubs take on Rockies right-hander Chris Flexen. The dynamic 21-year-old top outfield prospect slashed .288/.364/.524 versus righties this season in the minors.