Ross, who hasn't pitched since Opening Day because of shoulder inflammation, will still throw at least one more bullpen session before progressing to live batting practice -- which will mark the first time he's faced hitters since sustaining the injury.
The club has not yet set a date for Ross' next bullpen session, but it could come later this week.
AJ Cassavell is a reporter for MLB.com. Follow him on Twitter @ajcassavell. This story was not subject to the approval of Major League Baseball or its clubs.