Orioles' Terrin Vavra: Out with back strain

Vavra was placed on the 7-day minor-league injured list with a lower-back strain Friday, Steve Melewski of MASNSports.com reports.

Vavra was acquired from the Rockies last fall when the Orioles traded away Mychal Givens. He's posted a .261/.413/.447 slash line with four homers and three steals in 30 games for Double-A Bowie this year. It's not yet clear when he's expected to return.