Graveman is day-to-day with an illness, Susan Slusser of the San Francisco Chronicle reports.
According to Slusser, Graveman is dealing with an illness that is similar to what caused Sonny Gray to miss his start Monday. Graveman isn't scheduled to take the hill until Thursday, so it's possible that his ailment won't cause his start to be skipped, but he will be a pitcher to monitor over the next two days.