Brian Roberts, who is on the disabled list with a herniated disk in his back, was away from the team Wednesday because of another health situation.
Roberts has been dealing with lingering flu symptoms and gastrointestinal discomfort, and he'll undergo an endoscopy on Thursday to determine the root of his stomach pain
The two-time All-Star has not played since the home opener April 9, when he strained an abdominal muscle on a slide into second base. The slide jarred his herniated disk, and he later was forced to have a second epidural shot in a month in his back.