Holliday will be sidelined several days at Double-A Bowie due to an illness, Roch Kubatko of MASNSports.com reports.
Holliday has yet to be challenged at any level, including Bowie, where he's posted a .924 OPS in his first 10 games. He'll need a little breather to get well, though, before trying to finish strong in what is his first full pro season.