Merrill (concussion) was activated from the 7-day injured list and will start in center field and bat second Sunday against the Royals.
The 22-year-old landed on the shelf with a concussion last Sunday and is back on the active roster after missing the minimum amount of time. Merrill was struggling at the plate in June prior to the injury with a .260/.321/.380 slash line and a 28.6 percent strikeout rate in 13 games.