Holliday was placed on the 7-day injured list at Triple-A Norfolk on Friday with right elbow inflammation, Roch Kubatko of MASNSports.com reports.
It's not clear how long the top prospect might be sidelined. While he's still been drawing plenty of walks in June, Holliday has scuffled a bit overall this month, slashing .212/.422/.394. He sports a .252/.418/.429 line with five homers in 40 games for Norfolk since being demoted. A return to the big leagues had not seemed imminent for Holliday, but the injury will rule out the possibility for a while.