CHICAGO -- Chicago White Sox outfielder Luis Robert was placed on the injured list Friday, one week after he left a game against the Minnesota Twins because of lightheadedness and blurred vision.
Robert, 24, has yet to be diagnosed, but his symptoms did not improve over the All-Star break. General manager Rick Hahn indicated he was hopeful Robert's stay on the injured list would be minimal but could not specify a timetable for his return.
Robert is expected to do some activity on the field on Saturday.
"You're always concerned," manager Tony La Russa said Friday afternoon.