Gentry was designated for assignment by Baltimore on Friday, Brittany Ghiroli of MLB.com reports.
Gentry was cast off the 40-man roster in order to open up another spot for one of the Orioles' prospects in September. In 68 games with Baltimore this year, Gentry slashed .269/.321/.346 with 11 RBI and 12 stolen bases. He will now be subject to the waiver wire.