Conforto is out of the lineup for Thursday's game against the Nationals.
The veteran outfielder was expected to open the season as Chicago's primary right fielder versus right-handed pitching with Seiya Suzuki (knee) on the injured list, but Matt Shaw will instead receive the Opening Day nod. Conforto could still get semi-regular opportunities, but between Shaw and Dylan Carlson, there's strong competition for playing time.