Nationals manager Davey Johnson slotted Harper back into the second spot of the order and started him in right field for Sunday's game against the Brewers and right-handed starter Mark Rogers.
The rookie outfielder was a late scratch from Saturday's lineup due to a stomach virus. Harper revealed after the game that he hadn't been able to keep food down from Thursday night until Saturday afternoon, and he felt lightheaded and dizzy as a result.
Harper was vomiting late into the night Thursday and Friday -- even during Friday's game -- and a doctor told him and Johnson that the rookie would be best served to sit out Saturday. Harper said he felt better and had been keeping food down after Saturday's game, but he was still "a little jittery and whatnot."